Fertility norms in Japan

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This page gives information of type fertility norms about the country Japan.
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Ideal family size

Measures of ideal family size have been computed in various rounds of the National Survey on Family Planning and the 2004 round of the National Survey on Population, Families, and Generations, conducted by the Mainichi Newspapers of Japan. Unfortunately, we haven't been able to locate a tabular form of the data. However, a graphical representation found in the Japan baby bust paper (Figure 1), as well as the accompanying text, suggest that ideal family size has remained stable at around 2.5 in the time period 1981-2004, and has always stayed bounded between 2.3 and 2.7. In particular, changes in fertility over the time period cannot be explained by changes in ideal family size.

Data on the 1981 survey (the first one) is below:

Age of women Duration of current marriage Ideal number of children Desired number of children Number of cases
Total (all ages) 12.98 2.771 2.534 3022
20-24 1.82 2.549 2.43 86
25-29 4.1 2.702 2.488 482
30-34 8.15 2.76 2.511 693
35-39 13.02 2.797 2.555 586
40-44 17.89 2.804 2.57 610
45-49 22.73 2.812 2.558 565