Births per 1,000 women, by age of mother
Fertility in Japan, 1991
Japan
Afghanistan
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Antigua and Barbuda
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Less developed regions, excluding China
Less developed regions, excluding least developed countries
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Other non-specified areas
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World
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Zimbabwe
1991
Total fertility rate: 1.50
The total fertility rate of Japan was 1.50 children per woman in 1991 — below the replacement level of about 2.1. Births were most frequent among women aged 25-29 (136 per 1,000 women in that age group), and the average mother was 29.0 years old. In total, 1,183,921 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 1991
Total fertility rate
1.50
Births
1,183,921
Births per 1,000 people
9.6
Mean age of mothers
29.0
Births to mothers aged 15–19
1.6%
Net reproduction rate
0.72
Boys per 100 girls at birth
105.7
Population
123,889,871
The net reproduction rate counts only daughters who survive to their mothers' age: below 1, each generation of women is smaller than the one before.
Fertility by age of mother, 1991
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 0.0 | 0.0% | 38 |
| 15-19 | 3.9 | 1.3% | 19,013 |
| 20-24 | 43.2 | 14.4% | 192,154 |
| 25-29 | 135.6 | 45.4% | 522,632 |
| 30-34 | 93.2 | 31.2% | 350,455 |
| 35-39 | 20.8 | 7.0% | 87,346 |
| 40-44 | 2.2 | 0.7% | 12,017 |
| 45-49 | 0.1 | 0.0% | 268 |
| 50-54 | 0.0 | 0.0% | 0 |
Fertility in Japan by year