Table 1:
Childbirth demographics, 1970 – 2010
| Year | Number of babies | Distribution of mothers' ages (%) | Ave. age of bearing | |||||
|---|---|---|---|---|---|---|---|---|
| (1.000) | −19 | 20–24 | 25–29 | 30–34 | 35–39 | 40/over | first child (yr) | |
| 1970 | 1.934 | 1.0 | 26.5 | 49.2 | 18.5 | 4.2 | 0.5 | 25.6 |
| 1975 | 1,901 | 0.8 | 25.2 | 53.4 | 16.8 | 3.3 | 0.5 | 25.7 |
| 1980 | 1,577 | 0.9 | 18.8 | 51.4 | 24.7 | 3.7 | 0.5 | 26.4 |
| 1985 | 1,432 | 1.2 | 17.3 | 47.7 | 26.6 | 6.5 | 0.6 | 26.7 |
| 1990 | 1,222 | 1.4 | 15.7 | 45.1 | 29.1 | 7.6 | 1.0 | 27.0 |
| 1995 | 1,187 | 1.4 | 16.3 | 41.5 | 31.3 | 8.4 | 1.1 | 27.5 |
| 2000 | 1,191 | 1.7 | 13.6 | 39.5 | 33.3 | 10.6 | 1.3 | 28.0 |
| 2005 | 1,063 | 1.6 | 12.1 | 31.9 | 38.1 | 14.4 | 1.9 | 29.1 |
| 2008 | 1,091 | 1.4 | 11.4 | 29.1 | 37.1 | 18.4 | 2.6 | 29.5 |
| 2009 | 1,070 | 1.4 | 10.9 | 28.8 | 36.4 | 19.6 | 2.9 | 29.7 |
| 2010* | 1,071 | 1.3 | 10.4 | 28.6 | 35.9 | 20.5 | 3.3 | 29.9 |
*
(Source: Ministry of Health, Labour and Welfare, Japan)