Fertility in Indonesia, 1975
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1975
Total fertility rate: 5.03
The total fertility rate of Indonesia was 5.03 children per woman in 1975 — above the replacement level of about 2.1. Births were most frequent among women aged 20-24 (238 per 1,000 women in that age group), and the average mother was 28.3 years old. In total, 4,813,924 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 1975
Total fertility rate
5.03
Births
4,813,924
Births per 1,000 people
36.5
Mean age of mothers
28.3
Births to mothers aged 15–19
17.0%
Net reproduction rate
2.01
Boys per 100 girls at birth
105.6
Population
131,843,848
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, 1975
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 12.4 | 1.2% | 99,251 |
| 15-19 | 122.3 | 12.2% | 818,252 |
| 20-24 | 238.1 | 23.7% | 1,261,100 |
| 25-29 | 233.1 | 23.2% | 1,033,442 |
| 30-34 | 194.8 | 19.4% | 836,465 |
| 35-39 | 129.2 | 12.9% | 517,245 |
| 40-44 | 59.9 | 6.0% | 207,556 |
| 45-49 | 13.7 | 1.4% | 38,844 |
| 50-54 | 0.8 | 0.1% | 1,771 |
Fertility in Indonesia by year