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	<id>https://demography.subwiki.org/w/index.php?action=history&amp;feed=atom&amp;title=Completed_fertility_in_Portugal</id>
	<title>Completed fertility in Portugal - Revision history</title>
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	<updated>2026-09-06T07:14:21Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://demography.subwiki.org/w/index.php?title=Completed_fertility_in_Portugal&amp;diff=1049&amp;oldid=prev</id>
		<title>Vipul: Created page with &quot;{{country-specific information|information type = completed fertility|country = Portugal}}  ==Data sources==  {{HFD source|country = Portugal|country code = PRT|update date = ...&quot;</title>
		<link rel="alternate" type="text/html" href="https://demography.subwiki.org/w/index.php?title=Completed_fertility_in_Portugal&amp;diff=1049&amp;oldid=prev"/>
		<updated>2014-03-12T17:55:30Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{country-specific information|information type = completed fertility|country = Portugal}}  ==Data sources==  {{HFD source|country = Portugal|country code = PRT|update date = ...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{country-specific information|information type = completed fertility|country = Portugal}}&lt;br /&gt;
&lt;br /&gt;
==Data sources==&lt;br /&gt;
&lt;br /&gt;
{{HFD source|country = Portugal|country code = PRT|update date = October 31, 2011|download date = March 11, 2014}}&lt;br /&gt;
&lt;br /&gt;
==CCF and CCF40 not broken down by birth order==&lt;br /&gt;
&amp;lt;section begin=&amp;quot;main&amp;quot;/&amp;gt;&lt;br /&gt;
{| class=&amp;quot;sortable&amp;quot; border=&amp;quot;1&amp;quot;&lt;br /&gt;
! Cohort || [[Completed cohort fertility]] (CCF) || CCF minus previous year&amp;#039;s CCF || CCF40 || CCF40 minus previous year&amp;#039;s CCF40&lt;br /&gt;
|-&lt;br /&gt;
| 1925 || 2.98 ||  || 2.774 || &lt;br /&gt;
|-&lt;br /&gt;
| 1926 || 2.985 || 0.005 || 2.785 || 0.011&lt;br /&gt;
|-&lt;br /&gt;
| 1927 || 2.963 || -0.022 || 2.769 || -0.016&lt;br /&gt;
|-&lt;br /&gt;
| 1928 || 2.966 || 0.003 || 2.778 || 0.009&lt;br /&gt;
|-&lt;br /&gt;
| 1929 || 2.964 || -0.002 || 2.786 || 0.008&lt;br /&gt;
|-&lt;br /&gt;
| 1930 || 2.925 || -0.039 || 2.763 || -0.023&lt;br /&gt;
|-&lt;br /&gt;
| 1931 || 2.955 || 0.03 || 2.796 || 0.033&lt;br /&gt;
|-&lt;br /&gt;
| 1932 || 2.949 || -0.006 || 2.795 || -0.001&lt;br /&gt;
|-&lt;br /&gt;
| 1933 || 2.923 || -0.026 || 2.781 || -0.014&lt;br /&gt;
|-&lt;br /&gt;
| 1934 || 2.91 || -0.013 || 2.78 || -0.001&lt;br /&gt;
|-&lt;br /&gt;
| 1935 || 2.876 || -0.034 || 2.762 || -0.018&lt;br /&gt;
|-&lt;br /&gt;
| 1936 || 2.864 || -0.012 || 2.761 || -0.001&lt;br /&gt;
|-&lt;br /&gt;
| 1937 || 2.847 || -0.017 || 2.757 || -0.004&lt;br /&gt;
|-&lt;br /&gt;
| 1938 || 2.857 || 0.01 || 2.775 || 0.018&lt;br /&gt;
|-&lt;br /&gt;
| 1939 || 2.801 || -0.056 || 2.725 || -0.05&lt;br /&gt;
|-&lt;br /&gt;
| 1940 || 2.663 || -0.138 || 2.598 || -0.127&lt;br /&gt;
|-&lt;br /&gt;
| 1941 || 2.606 || -0.057 || 2.548 || -0.05&lt;br /&gt;
|-&lt;br /&gt;
| 1942 || 2.549 || -0.057 || 2.497 || -0.051&lt;br /&gt;
|-&lt;br /&gt;
| 1943 || 2.528 || -0.021 || 2.48 || -0.017&lt;br /&gt;
|-&lt;br /&gt;
| 1944 || 2.496 || -0.032 || 2.452 || -0.028&lt;br /&gt;
|-&lt;br /&gt;
| 1945 || 2.406 || -0.09 || 2.366 || -0.086&lt;br /&gt;
|-&lt;br /&gt;
| 1946 || 2.349 || -0.057 || 2.313 || -0.053&lt;br /&gt;
|-&lt;br /&gt;
| 1947 || 2.257 || -0.092 || 2.227 || -0.086&lt;br /&gt;
|-&lt;br /&gt;
| 1948 || 2.206 || -0.051 || 2.175 || -0.052&lt;br /&gt;
|-&lt;br /&gt;
| 1949 || 2.128 || -0.078 || 2.099 || -0.076&lt;br /&gt;
|-&lt;br /&gt;
| 1950 || 2.095 || -0.033 || 2.064 || -0.035&lt;br /&gt;
|-&lt;br /&gt;
| 1951 || 2.072 || -0.023 || 2.044 || -0.02&lt;br /&gt;
|-&lt;br /&gt;
| 1952 || 2.058 || -0.014 || 2.03 || -0.014&lt;br /&gt;
|-&lt;br /&gt;
| 1953 || 2.035 || -0.023 || 2.007 || -0.023&lt;br /&gt;
|-&lt;br /&gt;
| 1954 || 2.031 || -0.004 || 2.003 || -0.004&lt;br /&gt;
|-&lt;br /&gt;
| 1955 || 2.045 || 0.014 || 2.016 || 0.013&lt;br /&gt;
|-&lt;br /&gt;
| 1956 || 2.034 || -0.011 || 2.004 || -0.012&lt;br /&gt;
|-&lt;br /&gt;
| 1957 || 2 || -0.034 || 1.97 || -0.034&lt;br /&gt;
|-&lt;br /&gt;
| 1958 || 1.992 || -0.008 || 1.961 || -0.009&lt;br /&gt;
|-&lt;br /&gt;
| 1959 || 1.954 || -0.038 || 1.92 || -0.041&lt;br /&gt;
|-&lt;br /&gt;
| 1960 || unavailable ||  || 1.884 || -0.036&lt;br /&gt;
|-&lt;br /&gt;
| 1961 || unavailable ||  || 1.853 || -0.031&lt;br /&gt;
|-&lt;br /&gt;
| 1962 || unavailable ||  || 1.869 || 0.016&lt;br /&gt;
|-&lt;br /&gt;
| 1963 || unavailable ||  || 1.817 || -0.052&lt;br /&gt;
|-&lt;br /&gt;
| 1964 || unavailable ||  || 1.811 || -0.006&lt;br /&gt;
|-&lt;br /&gt;
| 1965 || unavailable ||  || 1.793 || -0.018&lt;br /&gt;
|-&lt;br /&gt;
| 1966 || unavailable ||  || 1.778 || -0.015&lt;br /&gt;
|-&lt;br /&gt;
| 1967 || unavailable ||  || 1.756 || -0.022&lt;br /&gt;
|-&lt;br /&gt;
| 1968 || unavailable ||  || 1.702 || -0.054&lt;br /&gt;
|-&lt;br /&gt;
| 1969 || unavailable ||  || 1.663 || -0.039&lt;br /&gt;
|}&lt;br /&gt;
&amp;lt;section end=&amp;quot;main&amp;quot;/&amp;gt;&lt;br /&gt;
==Completed cohort fertility broken down by birth order==&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;sortable&amp;quot; border=&amp;quot;1&amp;quot;&lt;br /&gt;
! Cohort || [[Completed cohort fertility]] (CCF) || CCF1 || CCF2 || CCF3 || CCF4 || CCF5+ || CCF1 proportion || CCF2 proportion || CCF3 proportion || CCF4 proportion || CCF5+ proportion&lt;br /&gt;
|-&lt;br /&gt;
| 1925 || 2.98 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1926 || 2.985 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1927 || 2.963 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1928 || 2.966 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1929 || 2.964 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1930 || 2.925 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1931 || 2.955 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1932 || 2.949 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1933 || 2.923 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1934 || 2.91 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1935 || 2.876 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1936 || 2.864 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1937 || 2.847 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1938 || 2.857 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1939 || 2.801 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1940 || 2.663 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1941 || 2.606 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1942 || 2.549 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1943 || 2.528 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1944 || 2.496 || 0.989 || 0.728 || 0.353 || 0.183 || 0.242 || 0.3962339744 || 0.2916666667 || 0.1414262821 || 0.0733173077 || 0.0969551282&lt;br /&gt;
|-&lt;br /&gt;
| 1945 || 2.406 || 0.98 || 0.718 || 0.332 || 0.164 || 0.211 || 0.4073150457 || 0.2984206151 || 0.1379883624 || 0.068162926 || 0.0876974231&lt;br /&gt;
|-&lt;br /&gt;
| 1946 || 2.349 || 0.982 || 0.716 || 0.317 || 0.151 || 0.184 || 0.4180502341 || 0.3048105577 || 0.134951043 || 0.0642826735 || 0.0783312048&lt;br /&gt;
|-&lt;br /&gt;
| 1947 || 2.257 || 0.974 || 0.7 || 0.297 || 0.135 || 0.151 || 0.4315463004 || 0.3101462118 || 0.131590607 || 0.0598139123 || 0.0669029685&lt;br /&gt;
|-&lt;br /&gt;
| 1948 || 2.206 || 0.963 || 0.693 || 0.286 || 0.127 || 0.136 || 0.436536718 || 0.3141432457 || 0.1296464189 || 0.0575702629 || 0.0616500453&lt;br /&gt;
|-&lt;br /&gt;
| 1949 || 2.128 || 0.944 || 0.679 || 0.269 || 0.117 || 0.119 || 0.4436090226 || 0.3190789474 || 0.1264097744 || 0.054981203 || 0.0559210526&lt;br /&gt;
|-&lt;br /&gt;
| 1950 || 2.095 || 0.945 || 0.676 || 0.257 || 0.109 || 0.108 || 0.4510739857 || 0.322673031 || 0.122673031 || 0.0520286396 || 0.0515513126&lt;br /&gt;
|-&lt;br /&gt;
| 1951 || 2.072 || 0.938 || 0.678 || 0.251 || 0.104 || 0.101 || 0.4527027027 || 0.3272200772 || 0.1211389961 || 0.0501930502 || 0.0487451737&lt;br /&gt;
|-&lt;br /&gt;
| 1952 || 2.058 || 0.934 || 0.683 || 0.249 || 0.099 || 0.093 || 0.4538386783 || 0.3318756074 || 0.1209912536 || 0.0481049563 || 0.0451895044&lt;br /&gt;
|-&lt;br /&gt;
| 1953 || 2.035 || 0.934 || 0.679 || 0.241 || 0.096 || 0.084 || 0.458968059 || 0.3336609337 || 0.1184275184 || 0.0471744472 || 0.0412776413&lt;br /&gt;
|-&lt;br /&gt;
| 1954 || 2.031 || 0.947 || 0.675 || 0.237 || 0.092 || 0.08 || 0.466272772 || 0.3323485968 || 0.1166912851 || 0.0452978828 || 0.0393894633&lt;br /&gt;
|-&lt;br /&gt;
| 1955 || 2.045 || 0.972 || 0.685 || 0.233 || 0.085 || 0.07 || 0.4753056235 || 0.3349633252 || 0.1139364303 || 0.0415647922 || 0.0342298289&lt;br /&gt;
|-&lt;br /&gt;
| 1956 || 2.034 || 0.97 || 0.68 || 0.23 || 0.084 || 0.069 || 0.476892822 || 0.3343166175 || 0.1130776794 || 0.0412979351 || 0.0339233038&lt;br /&gt;
|-&lt;br /&gt;
| 1957 || 2 || 0.967 || 0.673 || 0.22 || 0.079 || 0.061 || 0.4835 || 0.3365 || 0.11 || 0.0395 || 0.0305&lt;br /&gt;
|-&lt;br /&gt;
| 1958 || 1.992 || 0.973 || 0.671 || 0.215 || 0.076 || 0.056 || 0.4884538153 || 0.3368473896 || 0.1079317269 || 0.0381526104 || 0.0281124498&lt;br /&gt;
|-&lt;br /&gt;
| 1959 || 1.954 || 0.964 || 0.658 || 0.207 || 0.07 || 0.053 || 0.4933469806 || 0.3367451382 || 0.1059365404 || 0.0358239509 || 0.0271238485&lt;br /&gt;
|-&lt;br /&gt;
! Maximum (1944-1959) || 2.496 || 0.989 || 0.728 || 0.353 || 0.183 || 0.242 || 0.4933469806 || 0.3368473896 || 0.1414262821 || 0.0733173077 || 0.0969551282&lt;br /&gt;
|-&lt;br /&gt;
! Minimum (1944-1959) || 1.954 || 0.934 || 0.658 || 0.207 || 0.07 || 0.053 || 0.3962339744 || 0.2916666667 || 0.1059365404 || 0.0358239509 || 0.0271238485&lt;br /&gt;
|-&lt;br /&gt;
! Average (arithmetic mean) (1944-1959) || 2.134875 || 0.961 || 0.687 || 0.262125 || 0.1106875 || 0.113625 || 0.4521029209 || 0.32283856 || 0.1220510593 || 0.0510791594 || 0.0517187718&lt;br /&gt;
|-&lt;br /&gt;
! Geometric mean (1944-1959) || 2.1293992497 || 0.9608409163 || 0.6867524518 || 0.2589454906 || 0.1064140915 || 0.1019811235 || 0.4512262867 || 0.3225099529 || 0.1216049506 || 0.0499737621 || 0.0478919693&lt;br /&gt;
|-&lt;br /&gt;
! Median (1944-1959) || 2.065 || 0.9655 || 0.6795 || 0.25 || 0.1015 || 0.097 || 0.4532706905 || 0.3295478423 || 0.1210651249 || 0.0491490032 || 0.0469673391&lt;br /&gt;
|-&lt;br /&gt;
! Standard deviation (1944-1959) || 0.1615718107 || 0.0180333025 || 0.0191902753 || 0.0434355845 || 0.0332439844 || 0.0572280526 || 0.0287951307 || 0.0148487025 || 0.0108269001 || 0.0111763781 || 0.0215148624&lt;br /&gt;
|-&lt;br /&gt;
! Slope for best linear fit (using linear regression) (1944-1959) || -0.0311235294 || -0.0009205882 || -0.0034941176 || -0.0087676471 || -0.0066955882 || -0.0112911765 || 0.005954536 || 0.002928751 || -0.0022582454 || -0.0023071959 || -0.0043441327&lt;br /&gt;
|-&lt;br /&gt;
! Multiplier for best logarithmic fit (using linear regression on logarithm) (1944-1959) || 0.9858508024 || 0.9990563109 || 0.9949701818 || 0.967819815 || 0.942522661 || 0.9065841368 || 1.0133950375 || 1.0092502632 || 0.981710227 || 0.9560500014 || 0.9195956778&lt;br /&gt;
|-&lt;br /&gt;
! &amp;lt;math&amp;gt;R^2&amp;lt;/math&amp;gt; for linear regression (1944-1959) || 0.8410738964 || 0.0590701348 || 0.7514503557 || 0.9235543029 || 0.9194730258 || 0.8823646758 || 0.96927141 || 0.8818110808 || 0.986101583 || 0.9659495249 || 0.9240951199&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==CCF40 broken down by birth order==&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;sortable&amp;quot; border=&amp;quot;1&amp;quot;&lt;br /&gt;
! Year || CCF40 || CCF40_1 || CCF40_2 || CCF40_3 || CCF40_4 || CCF40_5+ || CCF40_1 proportion || CCF40_2 proportion || CCF40_3 proportion || CCF40_4 proportion || CCF40_5+ proportion&lt;br /&gt;
|-&lt;br /&gt;
| 1925 || 2.774 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1926 || 2.785 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1927 || 2.769 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1928 || 2.778 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1929 || 2.786 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1930 || 2.763 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1931 || 2.796 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1932 || 2.795 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1933 || 2.781 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1934 || 2.78 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1935 || 2.762 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1936 || 2.761 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1937 || 2.757 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1938 || 2.775 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1939 || 2.725 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1940 || 2.598 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1941 || 2.548 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1942 || 2.497 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1943 || 2.48 ||  ||  ||  ||  ||  ||  ||  ||  ||  || &lt;br /&gt;
|-&lt;br /&gt;
| 1944 || 2.452 || 0.983 || 0.723 || 0.347 || 0.177 || 0.222 || 0.4008972268 || 0.2948613377 || 0.1415171289 || 0.0721859706 || 0.0905383361&lt;br /&gt;
|-&lt;br /&gt;
| 1945 || 2.366 || 0.976 || 0.713 || 0.325 || 0.159 || 0.194 || 0.4125105664 || 0.3013524937 || 0.1373626374 || 0.0672020287 || 0.0819949281&lt;br /&gt;
|-&lt;br /&gt;
| 1946 || 2.313 || 0.977 || 0.71 || 0.311 || 0.146 || 0.17 || 0.4223951578 || 0.3069606572 || 0.1344574146 || 0.0631214872 || 0.0734976221&lt;br /&gt;
|-&lt;br /&gt;
| 1947 || 2.227 || 0.97 || 0.695 || 0.292 || 0.131 || 0.14 || 0.4355635384 || 0.3120790301 || 0.1311180961 || 0.0588235294 || 0.0628648406&lt;br /&gt;
|-&lt;br /&gt;
| 1948 || 2.175 || 0.959 || 0.688 || 0.28 || 0.123 || 0.125 || 0.4409195402 || 0.3163218391 || 0.1287356322 || 0.0565517241 || 0.0574712644&lt;br /&gt;
|-&lt;br /&gt;
| 1949 || 2.099 || 0.941 || 0.673 || 0.263 || 0.113 || 0.11 || 0.4483087184 || 0.3206288709 || 0.1252977608 || 0.0538351596 || 0.0524059076&lt;br /&gt;
|-&lt;br /&gt;
| 1950 || 2.064 || 0.939 || 0.67 || 0.251 || 0.104 || 0.1 || 0.4549418605 || 0.3246124031 || 0.1216085271 || 0.0503875969 || 0.0484496124&lt;br /&gt;
|-&lt;br /&gt;
| 1951 || 2.044 || 0.934 || 0.672 || 0.245 || 0.1 || 0.093 || 0.4569471624 || 0.3287671233 || 0.1198630137 || 0.0489236791 || 0.0454990215&lt;br /&gt;
|-&lt;br /&gt;
| 1952 || 2.03 || 0.93 || 0.677 || 0.243 || 0.095 || 0.086 || 0.4581280788 || 0.3334975369 || 0.1197044335 || 0.0467980296 || 0.042364532&lt;br /&gt;
|-&lt;br /&gt;
| 1953 || 2.007 || 0.929 || 0.673 || 0.235 || 0.092 || 0.078 || 0.4628799203 || 0.3353263577 || 0.1170901844 || 0.0458395615 || 0.0388639761&lt;br /&gt;
|-&lt;br /&gt;
| 1954 || 2.003 || 0.942 || 0.669 || 0.231 || 0.087 || 0.074 || 0.4702945582 || 0.3339990015 || 0.1153270095 || 0.0434348477 || 0.0369445831&lt;br /&gt;
|-&lt;br /&gt;
| 1955 || 2.016 || 0.967 || 0.679 || 0.226 || 0.081 || 0.064 || 0.4796626984 || 0.3368055556 || 0.1121031746 || 0.0401785714 || 0.0317460317&lt;br /&gt;
|-&lt;br /&gt;
| 1956 || 2.004 || 0.965 || 0.673 || 0.223 || 0.08 || 0.064 || 0.4815369261 || 0.3358283433 || 0.1112774451 || 0.0399201597 || 0.0319361277&lt;br /&gt;
|-&lt;br /&gt;
| 1957 || 1.97 || 0.961 || 0.665 || 0.212 || 0.075 || 0.056 || 0.4878172589 || 0.3375634518 || 0.1076142132 || 0.038071066 || 0.0284263959&lt;br /&gt;
|-&lt;br /&gt;
| 1958 || 1.961 || 0.966 || 0.663 || 0.208 || 0.072 || 0.052 || 0.4926058134 || 0.3380928098 || 0.1060683325 || 0.0367159612 || 0.0265170831&lt;br /&gt;
|-&lt;br /&gt;
| 1959 || 1.92 || 0.957 || 0.648 || 0.198 || 0.067 || 0.049 || 0.4984375 || 0.3375 || 0.103125 || 0.0348958333 || 0.0255208333&lt;br /&gt;
|-&lt;br /&gt;
| 1960 || 1.884 || 0.955 || 0.638 || 0.187 || 0.062 || 0.042 || 0.5069002123 || 0.338641189 || 0.0992569002 || 0.0329087049 || 0.0222929936&lt;br /&gt;
|-&lt;br /&gt;
| 1961 || 1.853 || 0.944 || 0.633 || 0.181 || 0.056 || 0.039 || 0.5094441446 || 0.3416082029 || 0.0976794387 || 0.0302212628 || 0.0210469509&lt;br /&gt;
|-&lt;br /&gt;
| 1962 || 1.869 || 0.965 || 0.638 || 0.175 || 0.053 || 0.037 || 0.5163188871 || 0.3413590155 || 0.0936329588 || 0.0283574104 || 0.0197966827&lt;br /&gt;
|-&lt;br /&gt;
| 1963 || 1.817 || 0.95 || 0.62 || 0.165 || 0.05 || 0.031 || 0.5228398459 || 0.3412217942 || 0.0908090259 || 0.0275178866 || 0.0170610897&lt;br /&gt;
|-&lt;br /&gt;
| 1964 || 1.811 || 0.96 || 0.616 || 0.162 || 0.046 || 0.028 || 0.5300938708 || 0.3401435671 || 0.0894533407 || 0.0254003313 || 0.0154610712&lt;br /&gt;
|-&lt;br /&gt;
| 1965 || 1.793 || 0.959 || 0.607 || 0.156 || 0.045 || 0.025 || 0.5348577803 || 0.3385387619 || 0.0870050195 || 0.0250976018 || 0.0139431121&lt;br /&gt;
|-&lt;br /&gt;
| 1966 || 1.778 || 0.966 || 0.601 || 0.149 || 0.04 || 0.023 || 0.5433070866 || 0.3380202475 || 0.0838020247 || 0.0224971879 || 0.012935883&lt;br /&gt;
|-&lt;br /&gt;
| 1967 || 1.756 || 0.959 || 0.593 || 0.145 || 0.038 || 0.022 || 0.5461275626 || 0.3376993166 || 0.0825740319 || 0.0216400911 || 0.0125284738&lt;br /&gt;
|-&lt;br /&gt;
| 1968 || 1.702 || 0.938 || 0.571 || 0.137 || 0.036 || 0.019 || 0.5511163337 || 0.3354876616 || 0.080493537 || 0.0211515864 || 0.0111633373&lt;br /&gt;
|-&lt;br /&gt;
| 1969 || 1.663 || 0.925 || 0.558 || 0.13 || 0.034 || 0.017 || 0.5562236921 || 0.335538184 || 0.0781719784 || 0.020444979 || 0.0102224895&lt;br /&gt;
|-&lt;br /&gt;
! Maximum (1944-1959) || 2.452 || 0.983 || 0.723 || 0.347 || 0.177 || 0.222 || 0.5562236921 || 0.3416082029 || 0.1415171289 || 0.0721859706 || 0.0905383361&lt;br /&gt;
|-&lt;br /&gt;
! Minimum (1944-1959) || 1.663 || 0.925 || 0.558 || 0.13 || 0.034 || 0.017 || 0.4008972268 || 0.2948613377 || 0.0781719784 || 0.020444979 || 0.0102224895&lt;br /&gt;
|-&lt;br /&gt;
! Average (arithmetic mean) (1944-1959) || 1.9837307692 || 0.9545 || 0.6525384615 || 0.2183461538 || 0.0831538462 || 0.0753846154 || 0.4854259977 || 0.3300944135 || 0.1082749331 || 0.0404662403 || 0.0358266608&lt;br /&gt;
|-&lt;br /&gt;
! Geometric mean (1944-1959) || 1.9742014889 || 0.9543722237 || 0.6511524158 || 0.2105637439 || 0.074601963 || 0.0583260044 || 0.4834218944 || 0.3298307794 || 0.1066576766 || 0.037788424 || 0.0295440991&lt;br /&gt;
|-&lt;br /&gt;
! Median (1944-1959) || 1.9865 || 0.959 || 0.667 || 0.2175 || 0.0775 || 0.06 || 0.4846770925 || 0.3356832637 || 0.1094458292 || 0.0389956128 || 0.0300862138&lt;br /&gt;
|-&lt;br /&gt;
! Standard deviation (1944-1959) || 0.2012822014 || 0.015905345 || 0.0428189031 || 0.0599899607 || 0.0396309902 || 0.0558985345 || 0.0447081527 || 0.0131954541 || 0.0189205469 || 0.0150975079 || 0.0226618124&lt;br /&gt;
|-&lt;br /&gt;
! Slope for best linear fit (using linear regression) (1944-1959) || -0.0253822222 || -0.0005582906 || -0.0053647863 || -0.0077220513 || -0.0050064957 || -0.0067582906 || 0.0058228729 || 0.0013964334 || -0.002469067 || -0.0019464654 || -0.0028154267&lt;br /&gt;
|-&lt;br /&gt;
! Multiplier for best logarithmic fit (using linear regression on logarithm) (1944-1959) || 0.9874094947 || 0.999421383 || 0.9916979785 || 0.9647694033 || 0.9395012775 || 0.907952187 || 1.0121650525 || 1.0043431664 || 0.9770712238 || 0.9514809029 || 0.9195295284&lt;br /&gt;
|-&lt;br /&gt;
! &amp;lt;math&amp;gt;R^2&amp;lt;/math&amp;gt; for linear regression (1944-1959) || 0.930260119 || 0.0720759386 || 0.9183107092 || 0.9693130821 || 0.9335846845 || 0.855123313 || 0.9923321076 || 0.6551604002 || 0.9962177011 || 0.9723860506 || 0.9029319964&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==Parity progression ratios==&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;sortable&amp;quot; border=&amp;quot;1&amp;quot;&lt;br /&gt;
! Cohort || PPR from 0 to 1 || PPR from 1 to 2 || PPR from 2 to 3 || PPR from 3 to 4&lt;br /&gt;
|-&lt;br /&gt;
| 1944 || 0.989 || 0.736 || 0.484 || 0.519&lt;br /&gt;
|-&lt;br /&gt;
| 1945 || 0.98 || 0.733 || 0.463 || 0.494&lt;br /&gt;
|-&lt;br /&gt;
| 1946 || 0.982 || 0.729 || 0.442 || 0.477&lt;br /&gt;
|-&lt;br /&gt;
| 1947 || 0.974 || 0.718 || 0.425 || 0.455&lt;br /&gt;
|-&lt;br /&gt;
| 1948 || 0.963 || 0.72 || 0.413 || 0.445&lt;br /&gt;
|-&lt;br /&gt;
| 1949 || 0.944 || 0.719 || 0.396 || 0.435&lt;br /&gt;
|-&lt;br /&gt;
| 1950 || 0.945 || 0.716 || 0.381 || 0.422&lt;br /&gt;
|-&lt;br /&gt;
| 1951 || 0.938 || 0.723 || 0.37 || 0.415&lt;br /&gt;
|-&lt;br /&gt;
| 1952 || 0.934 || 0.73 || 0.365 || 0.399&lt;br /&gt;
|-&lt;br /&gt;
| 1953 || 0.934 || 0.727 || 0.355 || 0.4&lt;br /&gt;
|-&lt;br /&gt;
| 1954 || 0.947 || 0.713 || 0.352 || 0.386&lt;br /&gt;
|-&lt;br /&gt;
| 1955 || 0.972 || 0.705 || 0.339 || 0.366&lt;br /&gt;
|-&lt;br /&gt;
| 1956 || 0.97 || 0.7 || 0.339 || 0.365&lt;br /&gt;
|-&lt;br /&gt;
| 1957 || 0.967 || 0.696 || 0.326 || 0.361&lt;br /&gt;
|-&lt;br /&gt;
| 1958 || 0.973 || 0.69 || 0.321 || 0.355&lt;br /&gt;
|-&lt;br /&gt;
| 1959 || 0.964 || 0.683 || 0.315 || 0.339&lt;br /&gt;
|-&lt;br /&gt;
! Maximum || 0.989 || 0.736 || 0.484 || 0.519&lt;br /&gt;
|-&lt;br /&gt;
! Minimum || 0.934 || 0.683 || 0.315 || 0.339&lt;br /&gt;
|-&lt;br /&gt;
! Average (arithmetic mean) || 0.961 || 0.714875 || 0.380375 || 0.4145625&lt;br /&gt;
|-&lt;br /&gt;
! Geometric mean || 0.9608409163 || 0.7147081199 || 0.3771652064 || 0.4114435001&lt;br /&gt;
|-&lt;br /&gt;
! Median || 0.9655 || 0.7185 || 0.3675 || 0.4075&lt;br /&gt;
|-&lt;br /&gt;
! Standard deviation || 0.0180333025 || 0.0158823802 || 0.052048535 || 0.0531425363&lt;br /&gt;
|-&lt;br /&gt;
! Slope for best linear fit (using linear regression) || -0.0009205882 || -0.0029029412 || -0.0106647059 || -0.0109897059&lt;br /&gt;
|-&lt;br /&gt;
! Multiplier for best logarithmic fit (using linear regression on logarithm) || 0.9990563109 || 0.995921722 || 0.9727538845 || 0.9740225202&lt;br /&gt;
|-&lt;br /&gt;
! &amp;lt;math&amp;gt;R^2&amp;lt;/math&amp;gt; for linear regression || 0.0590701348 || 0.7572389669 || 0.9516306092 || 0.9693380061&lt;br /&gt;
|}&lt;/div&gt;</summary>
		<author><name>Vipul</name></author>
	</entry>
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