Fertility in Japan, 1980
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1980
Total fertility rate: 1.74
The total fertility rate of Japan was 1.74 children per woman in 1980 — below the replacement level of about 2.1. Births were most frequent among women aged 25-29 (179 per 1,000 women in that age group), and the average mother was 27.8 years old. In total, 1,596,738 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 1980
Total fertility rate
1.74
Births
1,596,738
Births per 1,000 people
13.5
Mean age of mothers
27.8
Births to mothers aged 15–19
0.9%
Net reproduction rate
0.83
Boys per 100 girls at birth
106.0
Population
118,358,756
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, 1980
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 0.0 | 0.0% | 19 |
| 15-19 | 3.6 | 1.0% | 13,959 |
| 20-24 | 76.9 | 22.1% | 299,660 |
| 25-29 | 178.9 | 51.6% | 808,739 |
| 30-34 | 73.6 | 21.2% | 410,738 |
| 35-39 | 12.3 | 3.6% | 56,214 |
| 40-44 | 1.7 | 0.5% | 7,137 |
| 45-49 | 0.1 | 0.0% | 273 |
| 50-54 | 0.0 | 0.0% | 0 |
Fertility in Japan by year