Fertility in Tonga, 1980
Tonga
Afghanistan
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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
Yemen
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Zimbabwe
1980
Total fertility rate: 5.60
The total fertility rate of Tonga was 5.60 children per woman in 1980 — above the replacement level of about 2.1. Births were most frequent among women aged 25-29 (306 per 1,000 women in that age group), and the average mother was 30.5 years old. In total, 3,526 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 1980
Total fertility rate
5.60
Births
3,526
Births per 1,000 people
36.1
Mean age of mothers
30.5
Births to mothers aged 15–19
9.1%
Net reproduction rate
2.52
Boys per 100 girls at birth
108.0
Population
97,769
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 | 0.9 | 0.1% | 6 |
| 15-19 | 57.0 | 5.1% | 321 |
| 20-24 | 183.5 | 16.4% | 800 |
| 25-29 | 306.5 | 27.5% | 1,005 |
| 30-34 | 249.5 | 22.4% | 663 |
| 35-39 | 225.4 | 20.2% | 535 |
| 40-44 | 80.4 | 7.2% | 174 |
| 45-49 | 12.5 | 1.1% | 23 |
| 50-54 | 0.4 | 0.0% | 0 |
Fertility in Tonga by year