Births per 1,000 women, by age of mother
Fertility in Japan, 1981
Japan
Afghanistan
Africa
Albania
Algeria
Angola
Antigua and Barbuda
Argentina
Armenia
Aruba
Asia
Australia
Australia/New Zealand
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China
China, Hong Kong SAR
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Dem. People's Republic of Korea
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Europe
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Haiti
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India
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Iran (Islamic Republic of)
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Japan
Jordan
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Latin America and the Caribbean
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Least developed countries
Lebanon
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Less developed regions
Less developed regions, excluding China
Less developed regions, excluding least developed countries
Liberia
Libya
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More developed regions
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Other non-specified areas
Pakistan
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Peru
Philippines
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Portugal
Puerto Rico
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Republic of Korea
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Romania
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Viet Nam
Western Africa
Western Asia
Western Europe
Western Sahara
World
Yemen
Zambia
Zimbabwe
1981
Total fertility rate: 1.72
The total fertility rate of Japan was 1.72 children per woman in 1981 — below the replacement level of about 2.1. Births were most frequent among women aged 25-29 (178 per 1,000 women in that age group), and the average mother was 27.8 years old. In total, 1,526,132 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 1981
Total fertility rate
1.72
Births
1,526,132
Births per 1,000 people
12.8
Mean age of mothers
27.8
Births to mothers aged 15–19
1.0%
Net reproduction rate
0.82
Boys per 100 girls at birth
105.9
Population
118,994,053
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, 1981
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 0.0 | 0.0% | 22 |
| 15-19 | 3.8 | 1.1% | 14,784 |
| 20-24 | 72.8 | 21.4% | 280,900 |
| 25-29 | 178.2 | 52.4% | 765,067 |
| 30-34 | 71.0 | 20.9% | 399,924 |
| 35-39 | 12.7 | 3.7% | 57,415 |
| 40-44 | 1.8 | 0.5% | 7,754 |
| 45-49 | 0.1 | 0.0% | 266 |
| 50-54 | 0.0 | 0.0% | 0 |
Fertility in Japan by year