Fertility in Russia

From Demography

This page gives information of type fertility about the country Russia.
See all pages giving information on fertility for particular countries|See all pages giving information about Russia

Data sources

Most of the data on this page comes from the Human Fertility Database (website www.humanfertility.org) (data downloaded January 2014, last updated April 2012). The data collected by the Human Fertility Database is based on government data collection by the Russian government. Details about the modalities of data collection are available here.

Qualitative history of fertility-relevant events and trends

Key events

See Wikipedia:Abortion in Russia.

Year Event Postulated effects seen in abortion statistics
1920 Abortion was made legal by the Bolshevik government as part of their "Decree on Women's Healthcare" -- it was seen as a temporary necessity given that many women were not financially prepared to have kids because of the devastation caused by the war. No data available
1936 Abortion was made illegal because the leader, Joseph Stalin, wanted a larger population for greater national power. The law was unpopular. No data available
1955 Abortion was made legal again, shortly following Stalin's death in 1953. No data available
1993 Legal restrictions on sterilization were removed Decline in the abortion ratio from 1993 to 1994 -- the abortion ratio was quite high in 1992-1993 relative to what it was both earlier and later, suggesting that sterilization might have prevented further rise in the abortion ratio (note that the abortion rate was declining anyway, because the number of pregnancies overall was declining).
2011 Legal abortion was restricted to the first 12 weeks after pregnancy, with exception for abortion in the case of rape (22 weeks) and in case of medical necessity (any time prior to birth) No data available (too recent)

Trends in period fertility

Reliable data prior to 1959 is not available, so we concentrate on the trends from 1959 onward.

Time period Trend in fertility Some numbers Details
1959-1968 moderately paced decrease CBR decreased from 23.61 to 14.07
TFR decreased from 2.583 to 1.97		 The starting point for the decrease may have been earlier (like 1955, when abortion was made legal again) but we don't have reliable data prior to 1959.
1968-1980 relative stability, also slight divergence between CBR and TFR CBR increased from 14.07 to 15.91 (peaking at 15.91 in 1978)
TFR decreased from 1.97 to 1.863		 TFR and CBR both increased somewhat at the beginning of the period, then around 1973, TFR started declining whereas CBR continued to increase somewhat. Overall changes in both were minor.
1980-1987 modest increase CBR increased from 15.91 to 17.2
TFR increased from 1.863 to 2.229
1987-1999 rapid decrease CBR decreased from 17.2 to 8.32
TFR decreased from 2.229 to 1.158
1999-2010 modest increase CBR increased from 8.32 to 12.61
TFR increased from 1.158 to 1.569

Trends in cohort fertility

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Key quantitative metrics

Unless otherwise specified, data is from the Human Fertility Database, last updated April 2012.

The "Year" column below gives the period year for period measures, and the birth cohort year for cohort measures. With the exception of the tempo-adjusted total fertility rate, all latest period measures are for 2009. Latest cohort measures are 1960 and 1970, the former for the completed measures and the latter for the under-40 measures.

Metric Direct fertility measure, comparable with replacement fertility value of 2.1? Period measure or cohort measure? Most recent measurement Year Extreme values, along with year and source
crude birth rate (CBR) No Period 12.61 2010 Data available 1959-2010; maximum value 23.61 in 1959, minimum value 8.32 in 1999.
total fertility rate (TFR) Yes Period 1.569 2010 Data available 1959-2010; maximum value 2.583 in 1959, minimum value 1.158 in 1999
TFR40 Yes(ish) Period 1.538 2010 Data available 1959-2010; maximum value 2.467 in 1959, minimum value 1.146 in 1999
CBR proportions by birth order No Period birth orders 1, 2, 3, 4, 5 (and more) (respectively): 0.505, 0.360, 0.097, 0.025, 0.013 2010 Data available 1959-2010
TFR proportions by birth order No Period birth orders 1, 2, 3, 4, 5 (and more) (respectively): 0.504, 0.358, 0.099, 0.025, 0.014 2010 Data available 1959-2010
Completed cohort fertility Yes Cohort 1.849 1960 Data available for birth cohorts 1944-1960; maximum value 1.89 for 1949 cohort, minimum value 1.766 for 1947 cohort
CCF40 Yes(ish) Cohort 1.572 1970 Data available for birth cohorts 1944-1970; maximum value 1.876 for 1954 cohort, minimum value 1.572 for 1970 cohort

Data on period fertility

Data on total indicators only without breakdown by birth order

Year CBR CBR minus previous year's CBR TFR TFR minus previous year's TFR TFR40 TFR40 minus previous year's TFR40
1959 23.61 2.583 2.467
1960 23.16 -0.45 2.556 -0.027 2.447 -0.02
1961 21.86 -1.3 2.458 -0.098 2.363 -0.084
1962 20.14 -1.72 2.34 -0.118 2.252 -0.111
1963 18.72 -1.42 2.283 -0.057 2.201 -0.051
1964 16.88 -1.84 2.16 -0.123 2.084 -0.117
1965 15.71 -1.17 2.087 -0.073 2.017 -0.067
1966 15.34 -0.37 2.098 0.011 2.032 0.015
1967 14.42 -0.92 2.006 -0.092 1.947 -0.085
1968 14.07 -0.35 1.97 -0.036 1.913 -0.034
1969 14.24 0.17 1.984 0.014 1.933 0.02
1970 14.61 0.37 1.995 0.011 1.947 0.014
1971 15.08 0.47 2.024 0.029 1.979 0.032
1972 15.3 0.22 2.027 0.003 1.982 0.003
1973 15.06 -0.24 1.962 -0.065 1.919 -0.063
1974 15.61 0.55 1.995 0.033 1.953 0.034
1975 15.71 0.1 1.971 -0.024 1.931 -0.022
1976 15.9 0.19 1.953 -0.018 1.915 -0.016
1977 15.86 -0.04 1.918 -0.035 1.884 -0.031
1978 15.91 0.05 1.899 -0.019 1.867 -0.017
1979 15.81 -0.1 1.865 -0.034 1.836 -0.031
1980 15.91 0.1 1.863 -0.002 1.837 0.001
1981 16.07 0.16 1.882 0.019 1.857 0.02
1982 16.63 0.56 1.956 0.074 1.931 0.074
1983 17.57 0.94 2.088 0.132 2.063 0.132
1984 16.97 -0.6 2.051 -0.037 2.027 -0.036
1985 16.61 -0.36 2.051 0 2.028 0.001
1986 17.25 0.64 2.177 0.126 2.152 0.124
1987 17.2 -0.05 2.229 0.052 2.202 0.05
1988 16.03 -1.17 2.142 -0.087 2.116 -0.086
1989 14.66 -1.37 2.018 -0.124 1.995 -0.121
1990 13.44 -1.22 1.894 -0.124 1.874 -0.121
1991 12.09 -1.35 1.733 -0.161 1.715 -0.159
1992 10.69 -1.4 1.549 -0.184 1.532 -0.183
1993 9.38 -1.31 1.37 -0.179 1.358 -0.174
1994 9.59 0.21 1.395 0.025 1.383 0.025
1995 9.27 -0.32 1.338 -0.057 1.327 -0.056
1996 8.88 -0.39 1.271 -0.067 1.259 -0.068
1997 8.59 -0.29 1.219 -0.052 1.208 -0.051
1998 8.76 0.17 1.233 0.014 1.221 0.013
1999 8.32 -0.44 1.158 -0.075 1.146 -0.075
2000 8.7 0.38 1.196 0.038 1.183 0.037
2001 9.05 0.35 1.224 0.028 1.211 0.028
2002 9.69 0.64 1.287 0.063 1.274 0.063
2003 10.22 0.53 1.333 0.046 1.318 0.044
2004 10.45 0.23 1.341 0.008 1.325 0.007
2005 10.18 -0.27 1.288 -0.053 1.271 -0.054
2006 10.39 0.21 1.296 0.008 1.278 0.007
2007 11.33 0.94 1.406 0.11 1.385 0.107
2008 12.08 0.75 1.494 0.088 1.469 0.084
2009 12.41 0.33 1.537 0.043 1.509 0.04
2010 12.61 0.2 1.569 0.032 1.538 0.029
Mean 14.1157692308 -0.2156862745 1.8023461538 -0.0198823529 1.7665576923 -0.0182156863
Median 14.86 -0.04 1.9355 -0.018 1.8985 -0.016
Standard deviation 3.8021290971 0.7335564188 0.3919091474 0.0737584292 0.3715297689 0.071963967
Slope for best linear fit (using linear regression) -0.1989567148 0.0187963801 -0.0220988645 0.0012877828 -0.0206610177 0.0011103167
Multiplier for best logarithmic fit (using linear regression on the logarithm) 0.9857656066 0.9873666048 0.9878851946

Crude birth rate broken down by birth order

Year CBR CBR1 CBR2 CBR3 CBR4 CBR5+ CBR1 proportion CBR2 proportion CBR3 proportion CBR4 proportion CBR5+ proportion
1959 23.61 9.91 6.6 3.19 1.69 2.21 0.4197373994 0.2795425667 0.1351122406 0.0715798391 0.0936044049
1960 23.16 9.58 6.61 3.18 1.65 2.15 0.4136442142 0.2854058722 0.1373056995 0.0712435233 0.0928324698
1961 21.86 9.31 6.24 2.88 1.47 1.96 0.4258920403 0.285452882 0.131747484 0.0672461116 0.0896614822
1962 20.14 8.48 5.87 2.64 1.35 1.81 0.4210526316 0.2914597815 0.131082423 0.0670307845 0.0898709037
1963 18.72 7.67 5.63 2.49 1.23 1.69 0.4097222222 0.3007478632 0.1330128205 0.0657051282 0.0902777778
1964 16.88 6.96 5.11 2.16 1.09 1.55 0.4123222749 0.3027251185 0.1279620853 0.0645734597 0.0918246445
1965 15.71 6.38 4.8 2.02 1.03 1.48 0.4061107575 0.305537874 0.128580522 0.0655633355 0.0942075111
1966 15.34 6.31 4.71 1.91 0.97 1.44 0.4113428944 0.3070404172 0.1245110821 0.0632333768 0.0938722295
1967 14.42 6.18 4.4 1.69 0.85 1.3 0.4285714286 0.3051317614 0.1171983356 0.0589459085 0.0901525659
1968 14.07 6.3 4.22 1.55 0.78 1.23 0.447761194 0.2999289268 0.1101634684 0.0554371002 0.0874200426
1969 14.24 6.72 4.29 1.45 0.7 1.09 0.4719101124 0.3012640449 0.1018258427 0.0491573034 0.0765449438
1970 14.61 7.44 4.19 1.37 0.61 0.99 0.5092402464 0.28678987 0.0937713895 0.0417522245 0.067761807
1971 15.08 7.87 4.38 1.34 0.59 0.89 0.5218832891 0.2904509284 0.0888594164 0.0391246684 0.0590185676
1972 15.3 8.04 4.57 1.3 0.54 0.84 0.5254901961 0.2986928105 0.0849673203 0.0352941176 0.0549019608
1973 15.06 7.99 4.57 1.23 0.49 0.77 0.5305444887 0.3034528552 0.0816733068 0.0325365206 0.0511288181
1974 15.61 8.39 4.78 1.23 0.48 0.73 0.5374759769 0.3062139654 0.0787956438 0.0307495195 0.0467648943
1975 15.71 8.48 4.91 1.19 0.46 0.67 0.5397835773 0.3125397836 0.0757479313 0.0292807129 0.0426479949
1976 15.9 8.6 5.07 1.18 0.43 0.62 0.5408805031 0.3188679245 0.0742138365 0.0270440252 0.0389937107
1977 15.86 8.54 5.18 1.17 0.41 0.56 0.5384615385 0.3266078184 0.0737704918 0.025851198 0.0353089533
1978 15.91 8.63 5.25 1.16 0.38 0.5 0.5424261471 0.3299811439 0.0729101194 0.0238843495 0.0314267756
1979 15.81 8.63 5.23 1.13 0.37 0.46 0.5458570525 0.3308032891 0.0714737508 0.0234029096 0.0290955092
1980 15.91 8.6 5.41 1.14 0.35 0.41 0.5405405405 0.3400377121 0.0716530484 0.0219987429 0.025769956
1981 16.07 8.32 5.75 1.23 0.37 0.4 0.5177349098 0.3578095831 0.0765401369 0.0230242688 0.0248911014
1982 16.63 8.16 6.23 1.43 0.41 0.4 0.4906794949 0.3746241732 0.0859891762 0.0246542393 0.0240529164
1983 17.57 8.03 7.01 1.67 0.45 0.41 0.4570290268 0.3989755265 0.0950483779 0.0256118384 0.0233352305
1984 16.97 7.81 6.58 1.71 0.46 0.4 0.4602239246 0.387743076 0.1007660577 0.0271066588 0.0235710077
1985 16.61 7.49 6.43 1.79 0.49 0.42 0.4509331728 0.3871161951 0.1077664058 0.029500301 0.0252859723
1986 17.25 7.3 6.88 2.07 0.55 0.45 0.4231884058 0.3988405797 0.12 0.031884058 0.0260869565
1987 17.2 7.19 6.85 2.14 0.56 0.46 0.4180232558 0.398255814 0.1244186047 0.0325581395 0.026744186
1988 16.03 7.01 6.14 1.91 0.52 0.44 0.437305053 0.3830318153 0.1191515908 0.0324391765 0.027448534
1989 14.66 6.81 5.35 1.63 0.46 0.4 0.4645293315 0.3649386085 0.1111869031 0.031377899 0.0272851296
1990 13.44 6.65 4.6 1.41 0.42 0.36 0.4947916667 0.3422619048 0.1049107143 0.03125 0.0267857143
1991 12.09 6.35 3.86 1.19 0.37 0.32 0.5252274607 0.3192721257 0.0984284533 0.0306038048 0.0264681555
1992 10.69 5.96 3.2 0.95 0.31 0.27 0.5575304022 0.2993451824 0.088868101 0.0289990645 0.0252572498
1993 9.38 5.5 2.71 0.74 0.23 0.19 0.5863539446 0.28891258 0.078891258 0.0245202559 0.0202558635
1994 9.59 5.72 2.73 0.73 0.22 0.18 0.5964546403 0.2846715328 0.0761209593 0.0229405631 0.0187695516
1995 9.27 5.54 2.65 0.7 0.22 0.17 0.597626753 0.2858683927 0.0755124056 0.0237324703 0.0183387271
1996 8.88 5.28 2.56 0.68 0.21 0.16 0.5945945946 0.2882882883 0.0765765766 0.0236486486 0.018018018
1997 8.59 5.03 2.52 0.67 0.21 0.16 0.58556461 0.2933643772 0.0779976717 0.0244470314 0.0186263097
1998 8.76 5.15 2.57 0.67 0.21 0.16 0.5878995434 0.2933789954 0.0764840183 0.0239726027 0.0182648402
1999 8.32 4.94 2.41 0.63 0.19 0.14 0.59375 0.2896634615 0.0757211538 0.0228365385 0.0168269231
2000 8.7 5.2 2.53 0.65 0.19 0.13 0.5977011494 0.2908045977 0.0747126437 0.0218390805 0.0149425287
2001 9.05 5.45 2.64 0.64 0.19 0.13 0.6022099448 0.2917127072 0.070718232 0.0209944751 0.0143646409
2002 9.69 5.77 2.87 0.71 0.2 0.14 0.5954592363 0.2961816305 0.0732714138 0.0206398349 0.0144478844
2003 10.22 6.07 3.05 0.75 0.21 0.13 0.5939334638 0.2984344423 0.0733855186 0.0205479452 0.0127201566
2004 10.45 6.2 3.14 0.76 0.21 0.13 0.5933014354 0.3004784689 0.0727272727 0.0200956938 0.0124401914
2005 10.18 6.04 3.08 0.74 0.2 0.12 0.5933202358 0.3025540275 0.0726915521 0.0196463654 0.0117878193
2006 10.39 6.18 3.15 0.75 0.2 0.11 0.5948026949 0.3031761309 0.0721847931 0.0192492782 0.010587103
2007 11.33 6.28 3.71 0.95 0.25 0.15 0.5542806708 0.3274492498 0.0838481906 0.0220653133 0.013239188
2008 12.08 6.48 4.07 1.1 0.28 0.15 0.5364238411 0.3369205298 0.0910596026 0.0231788079 0.0124172185
2009 12.41 6.56 4.27 1.14 0.29 0.16 0.5286059629 0.344077357 0.0918614021 0.0233682514 0.0128928284
2010 12.61 6.37 4.54 1.22 0.31 0.16 0.5051546392 0.3600317209 0.0967486122 0.0245836638 0.0126883426
Mean 14.1157692308 7.0355769231 4.5403846154 1.3838461538 0.5251923077 0.6298076923 0.5129862344 0.3191703516 0.0940370396 0.0342682909 0.0394601579
Median 14.86 6.765 4.57 1.225 0.415 0.41 0.5270480795 0.3033144931 0.0874242963 0.027075342 0.026277556
Standard deviation 3.8021290971 1.2839131567 1.3895886844 0.6594654813 0.3855146313 0.5873285829 0.0669155691 0.0349620491 0.0215888332 0.0163254299 0.0292171315
Slope for best linear fit (using linear regression) -0.1989567148 -0.0571591394 -0.054186801 -0.0322504909 -0.0209113805 -0.0344535986 0.0031398214 0.0003415634 -0.0008592913 -0.0008821714 -0.0017413712
Multiplier for best logarithmic fit (using linear regression on the logarithm) 0.9857656066 0.9919512271 0.9868077025 0.9774203234 0.9634862731 0.9422832329 1.0062749406 1.0010571438 0.9915342114 0.9773989543 0.9558897436

Total fertility rate broken down by birth order

Year TFR TFR1 TFR2 TFR3 TFR4 TFR5+ TFR1 proportion TFR2 proportion TFR3 proportion TFR4 proportion TFR5+ proportion
1959 2.583 1.042 0.72 0.351 0.19 0.28 0.4034068912 0.2787456446 0.1358885017 0.0735578784 0.108401084
1960 2.556 1.021 0.726 0.354 0.186 0.269 0.3994522692 0.2840375587 0.1384976526 0.0727699531 0.1052425665
1961 2.458 1.036 0.689 0.325 0.168 0.24 0.4214808788 0.2803091945 0.1322213181 0.0683482506 0.097640358
1962 2.34 1.008 0.659 0.3 0.155 0.219 0.4307692308 0.2816239316 0.1282051282 0.0662393162 0.0935897436
1963 2.283 1.004 0.648 0.285 0.142 0.203 0.4397722295 0.2838370565 0.1248357424 0.0621988611 0.0889180902
1964 2.16 0.986 0.609 0.252 0.127 0.185 0.4564814815 0.2819444444 0.1166666667 0.0587962963 0.0856481481
1965 2.087 0.955 0.593 0.24 0.121 0.177 0.4575946334 0.2841399138 0.1149976042 0.0579779588 0.0848107331
1966 2.098 0.97 0.606 0.233 0.116 0.173 0.4623450906 0.2888465205 0.1110581506 0.0552907531 0.0824594852
1967 2.006 0.941 0.593 0.211 0.104 0.157 0.4690927218 0.2956131605 0.1051844467 0.0518444666 0.0782652044
1968 1.97 0.931 0.592 0.201 0.097 0.149 0.4725888325 0.3005076142 0.1020304569 0.0492385787 0.0756345178
1969 1.984 0.947 0.62 0.194 0.089 0.135 0.4773185484 0.3125 0.0977822581 0.044858871 0.0680443548
1970 1.995 0.986 0.613 0.189 0.082 0.126 0.494235589 0.3072681704 0.0947368421 0.0411027569 0.0631578947
1971 2.024 1.001 0.637 0.19 0.081 0.116 0.4945652174 0.3147233202 0.0938735178 0.0400197628 0.057312253
1972 2.027 0.992 0.664 0.185 0.076 0.111 0.4893931919 0.327577701 0.0912678836 0.0374938333 0.0547607301
1973 1.962 0.959 0.652 0.178 0.07 0.103 0.4887869521 0.3323139653 0.0907237513 0.0356778797 0.0524974516
1974 1.995 0.983 0.663 0.179 0.069 0.1 0.4927318296 0.3323308271 0.0897243108 0.0345864662 0.0501253133
1975 1.971 0.976 0.661 0.171 0.069 0.094 0.4951801116 0.33536276 0.0867579909 0.0350076104 0.0476915271
1976 1.953 0.975 0.66 0.166 0.063 0.089 0.4992319508 0.3379416283 0.0849974398 0.0322580645 0.0455709165
1977 1.918 0.959 0.658 0.162 0.058 0.081 0.5 0.3430656934 0.0844629823 0.0302398332 0.0422314911
1978 1.899 0.964 0.65 0.157 0.054 0.074 0.5076355977 0.3422854134 0.0826750922 0.028436019 0.0389678778
1979 1.865 0.964 0.633 0.149 0.051 0.068 0.5168900804 0.3394101877 0.0798927614 0.0273458445 0.036461126
1980 1.863 0.966 0.642 0.146 0.048 0.061 0.5185185185 0.344605475 0.0783682233 0.0257648953 0.0327428878
1981 1.882 0.945 0.674 0.155 0.049 0.059 0.5021253985 0.3581296493 0.0823591923 0.0260361318 0.0313496281
1982 1.956 0.944 0.725 0.176 0.053 0.058 0.4826175869 0.3706543967 0.0899795501 0.0270961145 0.0296523517
1983 2.088 0.956 0.812 0.204 0.058 0.058 0.4578544061 0.3888888889 0.0977011494 0.0277777778 0.0277777778
1984 2.051 0.967 0.766 0.206 0.057 0.055 0.4714773281 0.373476353 0.1004388103 0.0277913213 0.0268161872
1985 2.051 0.965 0.757 0.214 0.06 0.055 0.4705021941 0.3690882496 0.1043393467 0.0292540224 0.0268161872
1986 2.177 0.979 0.825 0.247 0.066 0.059 0.449701424 0.3789618741 0.1134588884 0.0303169499 0.0271015158
1987 2.229 1.003 0.843 0.257 0.068 0.058 0.4499775684 0.3781965007 0.1152983401 0.0305069538 0.0260206371
1988 2.142 1.011 0.779 0.233 0.064 0.055 0.4719887955 0.3636788049 0.1087768441 0.0298786181 0.0256769374
1989 2.018 1.007 0.703 0.202 0.056 0.05 0.4990089197 0.3483647175 0.100099108 0.0277502478 0.0247770069
1990 1.894 0.996 0.625 0.178 0.051 0.045 0.5258711721 0.3299894403 0.0939809926 0.0269271383 0.0237592397
1991 1.733 0.953 0.54 0.154 0.046 0.04 0.5499134449 0.3115983843 0.0888632429 0.0265435661 0.0230813618
1992 1.549 0.891 0.458 0.126 0.04 0.033 0.5752098128 0.2956746288 0.0813428018 0.0258231117 0.0213040671
1993 1.37 0.82 0.395 0.101 0.03 0.024 0.598540146 0.2883211679 0.0737226277 0.0218978102 0.0175182482
1994 1.395 0.842 0.401 0.101 0.03 0.023 0.6035842294 0.2874551971 0.0724014337 0.0215053763 0.0164874552
1995 1.338 0.803 0.387 0.098 0.029 0.021 0.6001494768 0.2892376682 0.0732436472 0.0216741405 0.0156950673
1996 1.271 0.755 0.372 0.094 0.028 0.021 0.5940204563 0.2926829268 0.0739575138 0.0220298977 0.0165224233
1997 1.219 0.71 0.366 0.094 0.028 0.021 0.5824446267 0.3002461034 0.0771123872 0.0229696473 0.0172272354
1998 1.233 0.718 0.371 0.094 0.028 0.02 0.5823195458 0.300892133 0.0762368208 0.0227088402 0.0162206002
1999 1.158 0.678 0.345 0.089 0.027 0.019 0.585492228 0.2979274611 0.0768566494 0.0233160622 0.0164075993
2000 1.196 0.702 0.358 0.092 0.026 0.018 0.5869565217 0.2993311037 0.0769230769 0.0217391304 0.0150501672
2001 1.224 0.721 0.369 0.09 0.027 0.018 0.5890522876 0.3014705882 0.0735294118 0.0220588235 0.0147058824
2002 1.287 0.745 0.396 0.1 0.028 0.019 0.5788655789 0.3076923077 0.0777000777 0.0217560218 0.0147630148
2003 1.333 0.766 0.415 0.105 0.029 0.019 0.5746436609 0.311327832 0.0787696924 0.0217554389 0.0142535634
2004 1.341 0.769 0.42 0.105 0.029 0.018 0.5734526473 0.3131991051 0.0782997763 0.0216256525 0.0134228188
2005 1.288 0.737 0.405 0.1 0.028 0.017 0.5722049689 0.3144409938 0.0776397516 0.0217391304 0.0131987578
2006 1.296 0.745 0.407 0.101 0.027 0.016 0.574845679 0.3140432099 0.0779320988 0.0208333333 0.012345679
2007 1.406 0.754 0.473 0.125 0.034 0.02 0.5362731152 0.3364153627 0.0889046942 0.0241820768 0.0142247511
2008 1.494 0.781 0.512 0.143 0.037 0.02 0.5227576975 0.3427041499 0.0957161981 0.0247657296 0.0133868809
2009 1.537 0.8 0.531 0.146 0.038 0.021 0.5204944697 0.3454782043 0.0949902407 0.0247234873 0.0136629798
2010 1.569 0.791 0.561 0.156 0.04 0.022 0.5041427661 0.3575525813 0.0994263862 0.0254939452 0.0140216699
Mean 1.8023461538 0.9003846154 0.5803653846 0.1750769231 0.0659038462 0.0806153846 0.5110376923 0.3210790416 0.0939394129 0.0340678971 0.0398734894
Median 1.9355 0.9555 0.6165 0.1685 0.055 0.058 0.4996159754 0.3136211575 0.0903516507 0.0277640128 0.0269588515
Standard deviation 0.3919091474 0.1107362445 0.1417480544 0.0691187799 0.0426781202 0.0714069129 0.0560888861 0.0308285928 0.0176189457 0.0150116983 0.0287386606
Slope for best linear fit (using linear regression) -0.0220988645 -0.0060391019 -0.0058041919 -0.0035825152 -0.0024189789 -0.0042557842 0.0028965365 0.0004710789 -0.000771175 -0.0008434406 -0.0017542246
Multiplier for best logarithmic fit (using linear regression on the logarithm) 0.9873666048 0.993042486 0.9888854092 0.9797147369 0.9656178273 0.9438451901 1.0057485043 1.0015382376 0.9922502261 0.977972946 0.9559217271

TFR40 broken down by birth order

Year TFR40 TFR40_1 TFR40_2 TFR40_3 TFR40_4 TFR40_5+ TFR40_1 proportion TFR40_2 proportion TFR40_3 proportion TFR40_4 proportion TFR40_5+ proportion
1959 2.467 1.036 0.711 0.339 0.175 0.206 0.4199432509 0.2882042967 0.137413863 0.07093636 0.0835022294
1960 2.447 1.015 0.717 0.343 0.172 0.2 0.4147936248 0.2930118512 0.1401716387 0.0702901512 0.081732734
1961 2.363 1.03 0.68 0.315 0.157 0.181 0.4358865848 0.2877697842 0.1333051206 0.0664409649 0.0765975455
1962 2.252 1.001 0.651 0.29 0.144 0.166 0.4444937833 0.2890763766 0.1287744227 0.0639431616 0.0737122558
1963 2.201 0.998 0.64 0.276 0.133 0.155 0.453430259 0.2907769196 0.1253975466 0.0604270786 0.0704225352
1964 2.084 0.98 0.6 0.244 0.119 0.142 0.4702495202 0.2879078695 0.1170825336 0.0571017274 0.0681381958
1965 2.017 0.95 0.585 0.232 0.113 0.137 0.4709965295 0.290034705 0.1150223104 0.0560237977 0.0679226574
1966 2.032 0.964 0.598 0.226 0.109 0.136 0.4744094488 0.2942913386 0.1112204724 0.0536417323 0.0669291339
1967 1.947 0.935 0.585 0.204 0.097 0.125 0.4802259887 0.3004622496 0.1047765794 0.0498202363 0.0642013354
1968 1.913 0.926 0.585 0.194 0.091 0.119 0.4840564558 0.3058024046 0.1014113957 0.0475692629 0.0622059592
1969 1.933 0.941 0.613 0.187 0.084 0.108 0.4868080704 0.317123642 0.0967408174 0.0434557682 0.055871702
1970 1.947 0.981 0.606 0.183 0.077 0.101 0.5038520801 0.311248074 0.093990755 0.0395480226 0.051874679
1971 1.979 0.996 0.631 0.183 0.076 0.093 0.5032844871 0.318847903 0.0924709449 0.038403234 0.046993431
1972 1.982 0.988 0.657 0.178 0.07 0.088 0.4984863774 0.3314833502 0.0898082745 0.0353178607 0.0443995964
1973 1.919 0.955 0.646 0.172 0.065 0.082 0.4976550287 0.3366336634 0.0896300156 0.0338718082 0.0427305888
1974 1.953 0.979 0.657 0.173 0.065 0.079 0.5012800819 0.33640553 0.0885816692 0.0332821301 0.0404505888
1975 1.931 0.972 0.655 0.166 0.064 0.074 0.5033661315 0.3392024858 0.0859658208 0.033143449 0.0383221129
1976 1.915 0.971 0.655 0.161 0.058 0.069 0.5070496084 0.3420365535 0.084073107 0.0302872063 0.0360313316
1977 1.884 0.956 0.652 0.157 0.054 0.064 0.5074309979 0.3460721868 0.0833333333 0.0286624204 0.033970276
1978 1.867 0.961 0.645 0.152 0.05 0.059 0.5147295126 0.3454740225 0.0814140332 0.026780932 0.0316014997
1979 1.836 0.961 0.628 0.145 0.048 0.055 0.5234204793 0.3420479303 0.0789760349 0.0261437908 0.029956427
1980 1.837 0.963 0.638 0.142 0.045 0.049 0.5242242787 0.3473053892 0.0772999456 0.0244964616 0.0266739249
1981 1.857 0.942 0.67 0.151 0.046 0.048 0.50726979 0.3607969844 0.0813139472 0.0247711362 0.0258481422
1982 1.931 0.941 0.72 0.172 0.05 0.047 0.4873122734 0.3728638011 0.0890730192 0.0258933195 0.0243397204
1983 2.063 0.954 0.808 0.199 0.055 0.048 0.4624333495 0.3916626272 0.0964614639 0.0266602036 0.0232670868
1984 2.027 0.965 0.762 0.201 0.054 0.046 0.4760730143 0.3759250123 0.0991613222 0.0266403552 0.0226936359
1985 2.028 0.963 0.752 0.209 0.057 0.047 0.474852071 0.3708086785 0.1030571992 0.0281065089 0.0231755424
1986 2.152 0.977 0.82 0.241 0.063 0.051 0.4539962825 0.3810408922 0.1119888476 0.0292750929 0.0236988848
1987 2.202 1 0.837 0.25 0.065 0.05 0.4541326067 0.3801089918 0.1135331517 0.0295186194 0.0227066303
1988 2.116 1.007 0.773 0.227 0.06 0.048 0.4758979206 0.3653119093 0.1072778828 0.0283553875 0.02268431
1989 1.995 1.003 0.697 0.197 0.054 0.044 0.5027568922 0.3493734336 0.0987468672 0.0270676692 0.0220551378
1990 1.874 0.993 0.62 0.173 0.049 0.039 0.5298826041 0.3308431163 0.0923159018 0.0261472785 0.0208110993
1991 1.715 0.95 0.536 0.15 0.044 0.035 0.5539358601 0.3125364431 0.0874635569 0.0256559767 0.0204081633
1992 1.532 0.888 0.455 0.123 0.038 0.029 0.5796344648 0.296997389 0.0802872063 0.0248041775 0.0189295039
1993 1.358 0.818 0.393 0.098 0.029 0.021 0.6023564065 0.2893961708 0.0721649485 0.0213549337 0.0154639175
1994 1.383 0.84 0.398 0.098 0.028 0.02 0.6073752711 0.287780188 0.0708604483 0.0202458424 0.014461316
1995 1.327 0.801 0.385 0.095 0.027 0.019 0.6036171816 0.2901281085 0.0715900528 0.0203466466 0.0143180106
1996 1.259 0.753 0.37 0.092 0.027 0.018 0.5980937252 0.2938840349 0.0730738681 0.0214455917 0.0142970612
1997 1.208 0.708 0.364 0.092 0.027 0.018 0.5860927152 0.3013245033 0.0761589404 0.0223509934 0.0149006623
1998 1.221 0.716 0.368 0.092 0.027 0.018 0.5864045864 0.3013923014 0.0753480753 0.0221130221 0.0147420147
1999 1.146 0.676 0.342 0.087 0.025 0.017 0.589877836 0.2984293194 0.0759162304 0.0218150087 0.0148342059
2000 1.183 0.7 0.355 0.089 0.024 0.015 0.5917159763 0.3000845309 0.0752324598 0.0202874049 0.0126796281
2001 1.211 0.718 0.366 0.087 0.025 0.015 0.592898431 0.3022295623 0.0718414533 0.0206440958 0.0123864575
2002 1.274 0.743 0.393 0.096 0.026 0.016 0.5832025118 0.308477237 0.0753532182 0.0204081633 0.0125588697
2003 1.318 0.764 0.411 0.101 0.026 0.016 0.5796661608 0.3118361153 0.0766312595 0.0197268589 0.0121396055
2004 1.325 0.766 0.416 0.1 0.027 0.016 0.5781132075 0.3139622642 0.0754716981 0.0203773585 0.0120754717
2005 1.271 0.735 0.401 0.096 0.026 0.014 0.5782848151 0.3154996066 0.0755310779 0.0204563336 0.0110149489
2006 1.278 0.743 0.402 0.096 0.024 0.013 0.5813771518 0.3145539906 0.0751173709 0.0187793427 0.010172144
2007 1.385 0.751 0.466 0.119 0.031 0.017 0.5422382671 0.3364620939 0.0859205776 0.0223826715 0.0122743682
2008 1.469 0.778 0.504 0.136 0.034 0.017 0.5296119809 0.3430905378 0.0925799864 0.0231449966 0.0115724983
2009 1.509 0.797 0.522 0.138 0.034 0.018 0.5281643472 0.3459244533 0.0914512922 0.0225314778 0.0119284294
2010 1.538 0.787 0.551 0.147 0.036 0.018 0.5117035111 0.3582574772 0.0955786736 0.0234070221 0.0117035111
Mean 1.7665576923 0.8968461538 0.5748461538 0.1695 0.0616153846 0.0639615385 0.5182508422 0.3238884673 0.0927569737 0.0325827124 0.0326611869
Median 1.8985 0.952 0.6095 0.1635 0.052 0.048 0.5071596992 0.3150267986 0.0893515174 0.0266502794 0.0232213146
Standard deviation 0.3715297689 0.1098191713 0.1406599828 0.0671166675 0.0396678137 0.0533324613 0.0535542086 0.0300526857 0.0183255951 0.0147227068 0.0223004327
Slope for best linear fit (using linear regression) -0.0206610177 -0.0059612396 -0.0057302143 -0.0034911637 -0.0022601383 -0.0032177922 0.002712078 0.0003246897 -0.0008345958 -0.0008312669 -0.0013686333
Multiplier for best logarithmic fit (using linear regression on the logarithm) 0.9878851946 0.993100907 0.9889134528 0.9795261356 0.9653766226 0.9464026482 1.0052796746 1.0010408681 0.9915384308 0.977215397 0.9580087376

Data 1800 onward: lower quality data based on reconstruction from other data

The data here are lower quality than the other data, even for recent years. They are based on various reconstructions and estimates, and are not sufficiently reliable for calculating year-on-year changes. However, broad trends may still be discerned.

The data sets correlate highly. For the years 1947-2009, where both data sets are available, the correlation is 0.982, indicating fairly good but not perfect agreement in the trend. The values themselves differ only slightly, both additively and multiplicatively, as the table below shows.

Year Russia's TFR according to Gapminder (low quality data) Russia's TFR according to HFD (high quality data) Difference Ratio
1800 6.73
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840 6.73
1841
1842
1843 6.7268
1844
1845
1846
1847
1848 6.7938
1849
1850
1851
1852
1853 6.7804
1854
1855
1856
1857
1858
1859
1860
1861 6.6598
1862
1863
1864
1865
1866
1867 6.7402
1868
1869
1870
1871
1872 6.5794
1873
1874
1875
1876
1877 6.6062
1878
1879
1880
1881
1882 6.7536
1883
1884
1885
1886
1887 6.365
1888
1889
1890
1891
1892 6.3248
1893
1894
1895
1896
1897
1898 7.3
1899
1900
1901
1902
1903 7.12
1904
1905
1906
1907
1908 7.17
1909
1910
1911
1912
1913 6.3
1914
1915
1916
1917
1918 5.23
1919
1920
1921
1922
1923 6.16
1924
1925
1926
1927
1928 6.38
1929
1930
1931
1932
1933 4.51
1934
1935
1936
1937
1938 4.74
1939
1940
1941
1942
1943 2.6
1944
1945
1946
1947
1948
1949
1950 2.814
1951 2.827
1952 2.848
1953 2.863
1954 2.87
1955 2.869
1956 2.86
1957 2.843
1958 2.815
1959 2.776 2.583 -0.193 0.9304755043
1960 2.723 2.556 -0.167 0.9386705839
1961 2.655 2.458 -0.197 0.9258003766
1962 2.571 2.34 -0.231 0.9101516919
1963 2.474 2.283 -0.191 0.9227970897
1964 2.369 2.16 -0.209 0.9117771211
1965 2.265 2.087 -0.178 0.9214128035
1966 2.17 2.098 -0.072 0.9668202765
1967 2.093 2.006 -0.087 0.9584328715
1968 2.038 1.97 -0.068 0.9666339549
1969 2.005 1.984 -0.021 0.9895261845
1970 1.991 1.995 0.004 1.0020090407
1971 1.991 2.024 0.033 1.0165745856
1972 1.993 2.027 0.034 1.017059709
1973 1.993 1.962 -0.031 0.9844455595
1974 1.987 1.995 0.008 1.0040261701
1975 1.976 1.971 -0.005 0.9974696356
1976 1.964 1.953 -0.011 0.9943991853
1977 1.956 1.918 -0.038 0.9805725971
1978 1.955 1.899 -0.056 0.9713554987
1979 1.963 1.865 -0.098 0.9500764137
1980 1.979 1.863 -0.116 0.9413845376
1981 2.006 1.882 -0.124 0.9381854437
1982 2.041 1.956 -0.085 0.9583537482
1983 2.077 2.088 0.011 1.0052961001
1984 2.11 2.051 -0.059 0.9720379147
1985 2.131 2.051 -0.08 0.9624589395
1986 2.129 2.177 0.048 1.0225457961
1987 2.101 2.229 0.128 1.0609233698
1988 2.046 2.142 0.096 1.0469208211
1989 1.964 2.018 0.054 1.0274949084
1990 1.861 1.894 0.033 1.0177324019
1991 1.745 1.733 -0.012 0.9931232092
1992 1.628 1.549 -0.079 0.9514742015
1993 1.519 1.37 -0.149 0.9019091508
1994 1.425 1.395 -0.03 0.9789473684
1995 1.35 1.338 -0.012 0.9911111111
1996 1.296 1.271 -0.025 0.9807098765
1997 1.261 1.219 -0.042 0.9666931007
1998 1.24 1.233 -0.007 0.9943548387
1999 1.233 1.158 -0.075 0.9391727494
2000 1.238 1.196 -0.042 0.9660743134
2001 1.253 1.224 -0.029 0.9768555467
2002 1.276 1.287 0.011 1.0086206897
2003 1.304 1.333 0.029 1.0222392638
2004 1.334 1.341 0.007 1.0052473763
2005 1.364 1.288 -0.076 0.9442815249
2006 1.393 1.296 -0.097 0.9303661163
2007 1.42 1.406 -0.014 0.9901408451
2008 1.446 1.494 0.048 1.0331950207
2009 1.468 1.537 0.069 1.0470027248
2010 1.489 1.569 0.08 1.0537273338
2011 1.506
2012 1.522
Average (1959-2010) -0.0444807692 0.9786359076

Data on completed fertility

CCF and CCF40, not broken down by birth order

Cohort Completed cohort fertility (CCF) CCF minus previous year's CCF CCF40 CCF40 minus previous year's CCF40
1944 1.815 1.791
1945 1.781 -0.034 1.757 -0.034
1946 1.836 0.055 1.811 0.054
1947 1.766 -0.07 1.743 -0.068
1948 1.784 0.018 1.764 0.021
1949 1.89 0.106 1.87 0.106
1950 1.854 -0.036 1.837 -0.033
1951 1.889 0.035 1.874 0.037
1952 1.876 -0.013 1.863 -0.011
1953 1.862 -0.014 1.85 -0.013
1954 1.887 0.025 1.876 0.026
1955 1.854 -0.033 1.842 -0.034
1956 1.845 -0.009 1.834 -0.008
1957 1.874 0.029 1.862 0.028
1958 1.862 -0.012 1.85 -0.012
1959 1.86 -0.002 1.847 -0.003
1960 1.849 -0.011 1.836 -0.011
1961 1.786 -0.05
1962 1.737 -0.049
1963 1.707 -0.03
1964 1.68 -0.027
1965 1.659 -0.021
1966 1.636 -0.023
1967 1.611 -0.025
1968 1.6 -0.011
1969 1.587 -0.013
1970 1.572 -0.015
Mean (1944-1960) 1.8461176471 0.002125 1.8298235294 0.0028125
Median (1944-1960) 1.854 -0.01 1.842 -0.0095
Standard deviation (1944-1960) 0.0383452773 0.041920361 0.0420077899 0.0415920165
Slope for best linear fit (using linear regression) (1944-1960) 0.0041568627 -0.0007058824 0.0050710784 -0.0008161765
Multiplier for best logarithmic fit (using linear regression on the logarithm) (1944-1960) 1.0022847828 1.0028122562

Mean age of birth by period

Mean age of birth

Year Mean age of birth (MAB) MAB1 MAB2 MAB3 MAB4 MAB5+ MAB40 MAB40_1 MAB40_2 MAB40_3 MAB40_4 MAB40_5+
1959 28.19 24.44 27.94 30.55 32.74 36.73 27.51 24.34 27.76 30.14 31.95 34.53
1960 28.16 24.4 28.01 30.52 32.65 36.62 27.51 24.28 27.83 30.13 31.91 34.48
1961 27.76 24.12 27.88 30.35 32.42 36.34 27.17 24.02 27.7 29.98 31.72 34.23
1962 27.74 24.16 28 30.48 32.46 36.33 27.16 24.04 27.81 30.11 31.75 34.26
1963 27.55 24.01 27.94 30.48 32.43 36.26 26.99 23.9 27.75 30.09 31.72 34.22
1964 27.47 24.06 28.03 30.54 32.48 36.2 26.93 23.95 27.83 30.14 31.8 34.16
1965 27.47 24.03 28.12 30.59 32.55 36.15 26.95 23.92 27.93 30.18 31.86 34.19
1966 27.4 23.97 28.18 30.67 32.53 36.06 26.91 23.86 28 30.3 31.86 34.2
1967 27.28 23.95 28.12 30.72 32.42 35.99 26.82 23.84 27.95 30.33 31.76 34.19
1968 27.21 23.91 28.11 30.74 32.55 35.97 26.76 23.81 27.94 30.34 31.92 34.22
1969 27.06 23.75 28.2 30.84 32.59 36 26.66 23.65 28.05 30.44 31.92 34.33
1970 26.88 23.64 28.25 30.78 32.61 35.92 26.5 23.54 28.1 30.41 31.96 34.32
1971 26.77 23.52 28.25 30.9 32.6 35.91 26.42 23.43 28.11 30.52 31.93 34.38
1972 26.72 23.44 28.2 30.97 32.78 36.02 26.37 23.36 28.06 30.58 32.08 34.42
1973 26.63 23.4 28.08 30.97 32.81 35.99 26.29 23.32 27.94 30.58 32.12 34.37
1974 26.5 23.34 27.89 30.92 32.7 36.08 26.16 23.27 27.76 30.53 31.99 34.42
1975 26.38 23.29 27.77 30.78 32.7 36 26.05 23.22 27.64 30.39 32.01 34.33
1976 26.21 23.22 27.61 30.59 32.46 35.94 25.89 23.15 27.49 30.2 31.75 34.18
1977 26.1 23.18 27.54 30.41 32.35 35.83 25.8 23.12 27.42 30.03 31.61 34.11
1978 25.95 23.1 27.5 30.32 32.19 35.76 25.68 23.05 27.39 29.94 31.47 34.09
1979 25.8 23.03 27.42 30.15 32.02 35.61 25.54 22.98 27.31 29.77 31.31 33.97
1980 25.68 22.99 27.33 30.07 31.81 35.49 25.44 22.93 27.23 29.72 31.12 33.85
1981 25.74 23.01 27.31 30.02 31.74 35.29 25.52 22.96 27.21 29.68 31.06 33.72
1982 25.81 23 27.26 30.07 31.73 35.13 25.6 22.95 27.17 29.75 31.06 33.53
1983 25.91 22.96 27.28 30.12 31.66 34.91 25.72 22.91 27.2 29.84 31.07 33.38
1984 25.79 22.92 27.2 30.1 31.57 34.72 25.6 22.87 27.11 29.82 31.01 33.26
1985 25.78 22.91 27.13 30.04 31.54 34.57 25.59 22.86 27.04 29.77 30.99 33.22
1986 25.97 22.95 27.21 30.23 31.7 34.56 25.78 22.9 27.11 29.96 31.17 33.32
1987 25.97 22.92 27.21 30.31 31.85 34.56 25.77 22.86 27.11 30.01 31.29 33.34
1988 25.8 22.9 27.12 30.26 31.79 34.46 25.6 22.83 27.01 29.95 31.25 33.31
1989 25.51 22.78 26.97 30.09 31.64 34.45 25.32 22.72 26.85 29.78 31.11 33.34
1990 25.24 22.65 26.85 29.94 31.64 34.38 25.06 22.59 26.74 29.63 31.1 33.32
1991 25.03 22.6 26.72 29.81 31.52 34.35 24.85 22.54 26.61 29.48 30.97 33.22
1992 24.86 22.6 26.63 29.74 31.51 34.46 24.68 22.54 26.52 29.39 30.92 33.29
1993 24.66 22.56 26.62 29.67 31.48 34.33 24.49 22.5 26.51 29.32 30.87 33.12
1994 24.63 22.53 26.74 29.7 31.51 34.21 24.49 22.48 26.64 29.38 30.95 33.05
1995 24.8 22.67 26.91 29.84 31.54 34.28 24.65 22.62 26.81 29.53 31 33.13
1996 25.04 22.88 27.11 30.11 31.77 34.35 24.88 22.82 27.01 29.77 31.18 33.16
1997 25.23 22.97 27.29 30.27 31.91 34.31 25.08 22.92 27.2 29.93 31.33 33.19
1998 25.41 23.12 27.54 30.47 32.13 34.43 25.25 23.07 27.44 30.11 31.51 33.27
1999 25.57 23.29 27.7 30.69 32.3 34.53 25.4 23.24 27.6 30.32 31.65 33.29
2000 25.76 23.54 27.88 30.88 32.49 34.57 25.6 23.48 27.78 30.5 31.81 33.38
2001 25.93 23.66 28.21 31.13 32.6 34.53 25.77 23.61 28.1 30.71 31.93 33.36
2002 26.12 23.76 28.42 31.26 32.75 34.75 25.96 23.71 28.3 30.85 32.08 33.6
2003 26.27 23.86 28.61 31.4 32.77 34.78 26.1 23.8 28.49 30.97 32.03 33.65
2004 26.42 23.98 28.79 31.52 32.98 34.86 26.23 23.92 28.66 31.05 32.22 33.68
2005 26.56 24.12 28.95 31.62 33.02 34.97 26.36 24.06 28.8 31.12 32.21 33.74
2006 26.64 24.22 29.08 31.72 33.13 34.99 26.44 24.16 28.92 31.2 32.28 33.68
2007 26.99 24.33 29.19 31.8 33.2 35.02 26.77 24.27 29.02 31.28 32.38 33.8
2008 27.19 24.4 29.34 31.98 33.37 35.17 26.94 24.33 29.15 31.44 32.5 33.88
2009 27.36 24.61 29.47 32.06 33.38 35.1 27.09 24.53 29.26 31.5 32.48 33.75
2010 27.6 24.8 29.56 32.22 33.45 35.13 27.31 24.71 29.32 31.63 32.54 33.72
Average 26.3173076923 23.4701923077 27.8205769231 30.6232692308 32.3176923077 35.2567307692 26.0271153846 23.3988461538 27.6863461538 30.2407692308 31.6436538462 33.7721153846
Median 26.165 23.37 27.88 30.53 32.445 35.115 25.925 23.295 27.725 30.135 31.75 33.73
Standard deviation 0.9336542489 0.6163284405 0.7454658064 0.632634458 0.5619420645 0.7521778084 0.8129981707 0.6021714102 0.7181458393 0.5688648696 0.4803186395 0.4601207708
Slope for best linear fit (using linear regression) -0.0295765389 -0.0031311363 0.0101028771 0.0155609152 0.0034559891 -0.0401062922 -0.0215798685 -0.0021130368 0.0107406301 0.0139375053 0.0025309485 -0.0213706992
Multiplier for best logarithmic fit (using linear regression on logarithm) 0.9988853204 0.9998597306 1.0003424344 1.000494827 1.0001005831 0.9988688392 0.999172554 0.9999021045 1.0003681956 1.0004501338 1.0000757125 0.9993692248
R^2 for linear regression 0.2304732428 0.0059275811 0.0421825331 0.1389512808 0.0086867956 0.6529530591 0.1618141212 0.0028279506 0.0513726759 0.1378636687 0.0063768428 0.4954407836


Standard deviation in mean age of birth=

Year Standard deviation in mean age of birth (sdMAB) sdMAB1 sdMAB2 sdMAB3 sdMAB4 sdMAB5p sdMAB40 sdMAB40_1 sdMAB40_2 sdMAB40_3 sdMAB40_4 sdMAB40_5p
1959 6.04 4.32 4.54 4.68 4.75 4.96 5.26 4.11 4.26 4.19 3.95 3.6
1960 6.02 4.38 4.55 4.67 4.71 4.98 5.27 4.16 4.28 4.2 3.96 3.62
1961 5.99 4.35 4.59 4.65 4.68 5.03 5.29 4.14 4.33 4.21 3.96 3.69
1962 5.97 4.36 4.62 4.68 4.68 4.99 5.29 4.13 4.35 4.24 3.94 3.65
1963 5.96 4.34 4.62 4.73 4.7 4.98 5.3 4.12 4.36 4.28 3.98 3.62
1964 5.96 4.39 4.67 4.79 4.63 4.96 5.3 4.15 4.39 4.34 3.93 3.57
1965 5.94 4.38 4.63 4.79 4.63 4.92 5.31 4.15 4.37 4.33 3.93 3.55
1966 5.9 4.33 4.59 4.73 4.64 4.86 5.31 4.11 4.34 4.32 3.99 3.52
1967 5.86 4.32 4.56 4.78 4.72 4.87 5.29 4.1 4.32 4.35 4.08 3.59
1968 5.83 4.31 4.55 4.77 4.65 4.78 5.28 4.1 4.31 4.33 4.03 3.54
1969 5.77 4.21 4.5 4.75 4.7 4.75 5.26 3.99 4.28 4.32 4.07 3.61
1970 5.75 4.18 4.51 4.77 4.69 4.73 5.27 3.97 4.29 4.37 4.1 3.67
1971 5.7 4.06 4.54 4.73 4.68 4.64 5.26 3.88 4.34 4.33 4.07 3.66
1972 5.69 4.01 4.53 4.81 4.75 4.65 5.25 3.83 4.34 4.41 4.13 3.63
1973 5.68 4 4.58 4.8 4.71 4.65 5.25 3.83 4.39 4.41 4.09 3.64
1974 5.65 3.97 4.55 4.84 4.79 4.64 5.21 3.81 4.37 4.45 4.16 3.62
1975 5.6 3.97 4.51 4.89 4.72 4.66 5.17 3.81 4.33 4.49 4.1 3.62
1976 5.53 3.94 4.44 4.93 4.87 4.78 5.1 3.79 4.26 4.53 4.24 3.71
1977 5.48 3.97 4.42 4.92 4.95 4.82 5.07 3.82 4.24 4.53 4.3 3.78
1978 5.42 3.94 4.35 4.9 5.01 4.83 5.03 3.81 4.18 4.49 4.37 3.79
1979 5.38 3.94 4.37 4.9 5.04 4.9 5 3.8 4.2 4.49 4.4 3.86
1980 5.31 3.93 4.35 4.84 5 4.93 4.96 3.81 4.2 4.45 4.36 3.9
1981 5.29 3.96 4.36 4.81 4.95 4.94 4.96 3.85 4.21 4.42 4.31 3.94
1982 5.29 3.97 4.38 4.77 4.91 4.98 4.97 3.86 4.24 4.41 4.27 3.95
1983 5.27 3.98 4.36 4.72 4.84 4.93 4.99 3.86 4.23 4.4 4.26 3.87
1984 5.28 3.99 4.42 4.73 4.78 4.92 5.01 3.88 4.29 4.41 4.22 3.86
1985 5.29 4.01 4.45 4.75 4.81 4.86 5.03 3.9 4.31 4.45 4.26 3.83
1986 5.37 4.09 4.5 4.76 4.79 4.77 5.1 3.96 4.35 4.46 4.28 3.84
1987 5.42 4.12 4.55 4.79 4.81 4.76 5.14 3.99 4.39 4.46 4.28 3.85
1988 5.41 4.15 4.57 4.84 4.86 4.78 5.13 3.99 4.39 4.5 4.33 3.91
1989 5.37 4.13 4.55 4.84 4.83 4.71 5.1 3.98 4.37 4.5 4.32 3.87
1990 5.34 4.11 4.53 4.84 4.84 4.68 5.08 3.97 4.36 4.5 4.32 3.89
1991 5.32 4.1 4.55 4.88 4.88 4.78 5.04 3.96 4.38 4.51 4.35 3.95
1992 5.28 4.11 4.55 4.92 4.92 4.77 5 3.97 4.37 4.52 4.35 3.92
1993 5.18 4.08 4.48 4.93 4.98 4.84 4.92 3.95 4.32 4.53 4.41 3.94
1994 5.13 4.04 4.41 4.87 4.88 4.82 4.9 3.92 4.26 4.51 4.33 3.95
1995 5.15 4.08 4.44 4.85 4.85 4.8 4.92 3.96 4.29 4.49 4.33 3.95
1996 5.2 4.12 4.49 4.89 4.87 4.78 4.96 4 4.33 4.52 4.32 3.91
1997 5.24 4.15 4.49 4.89 4.87 4.77 5.01 4.04 4.35 4.52 4.34 3.93
1998 5.27 4.16 4.51 4.93 4.91 4.77 5.04 4.05 4.36 4.56 4.36 3.94
1999 5.27 4.16 4.5 4.89 4.89 4.86 5.03 4.05 4.35 4.51 4.33 3.99
2000 5.27 4.25 4.5 4.89 4.9 4.7 5.03 4.12 4.35 4.51 4.32 3.83
2001 5.3 4.25 4.54 4.94 4.86 4.69 5.06 4.13 4.39 4.53 4.29 3.83
2002 5.32 4.22 4.56 4.92 4.85 4.67 5.1 4.12 4.41 4.54 4.3 3.84
2003 5.36 4.25 4.59 4.93 4.94 4.64 5.13 4.15 4.44 4.54 4.35 3.86
2004 5.43 4.32 4.68 4.99 4.93 4.68 5.18 4.21 4.52 4.56 4.33 3.89
2005 5.48 4.41 4.74 5.04 4.97 4.7 5.22 4.29 4.56 4.59 4.34 3.87
2006 5.51 4.47 4.78 5.05 5 4.75 5.26 4.35 4.6 4.61 4.35 3.9
2007 5.59 4.53 4.79 5.03 4.95 4.67 5.32 4.41 4.6 4.59 4.33 3.85
2008 5.66 4.58 4.85 5.01 4.98 4.68 5.38 4.46 4.65 4.56 4.34 3.86
2009 5.69 4.67 4.92 5.05 5.01 4.75 5.39 4.53 4.68 4.59 4.35 3.89
2010 5.72 4.74 4.95 5.07 5.02 4.8 5.39 4.58 4.7 4.59 4.36 3.91
Average 5.5217307692 4.1884615385 4.5492307692 4.8494230769 4.8380769231 4.7992307692 5.1446153846 4.0367307692 4.3611538462 4.4509615385 4.2263461538 3.7934615385
Median 5.425 4.15 4.54 4.84 4.855 4.78 5.13 3.99 4.35 4.49 4.3 3.85
Standard deviation 0.266801837 0.1986659884 0.1340448587 0.1065209813 0.1182393462 0.1108584357 0.1403980551 0.1906821722 0.1187294477 0.1085783284 0.1501897995 0.1386190239
Slope for best linear fit (using linear regression) -0.0115892598 0.003228891 0.003135832 0.005871681 0.0059668744 -0.0037445573 -0.0023870913 0.0054849313 0.0048032101 0.00644028 0.0083885426 0.0073601981
Multiplier for best logarithmic fit (using linear regression on logarithm) 0.9979414028 1.000741278 1.0006664851 1.0012092017 1.0012408246 0.999227811 0.999532006 1.001313228 1.0010806421 1.0014583711 1.0020165678 1.0019646062
R^2 for linear regression 0.433342948 0.0606677216 0.1256907203 0.6978347007 0.5848812814 0.2620362909 0.0663917065 0.1900291239 0.3758756924 0.8080182457 0.7164569925 0.647487365
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