Births per 1,000 women, by age of mother
Fertility in Bulgaria, 1976
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1976
Total fertility rate: 2.25
The total fertility rate of Bulgaria was 2.25 children per woman in 1976 — above the replacement level of about 2.1. Births were most frequent among women aged 20-24 (202 per 1,000 women in that age group), and the average mother was 24.3 years old. In total, 145,128 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 1976
Total fertility rate
2.25
Births
145,128
Births per 1,000 people
16.6
Mean age of mothers
24.3
Births to mothers aged 15–19
16.5%
Net reproduction rate
1.06
Boys per 100 girls at birth
106.1
Population
8,759,438
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, 1976
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 1.1 | 0.2% | 335 |
| 15-19 | 77.4 | 17.2% | 24,007 |
| 20-24 | 202.4 | 44.9% | 65,831 |
| 25-29 | 112.4 | 24.9% | 38,195 |
| 30-34 | 41.7 | 9.2% | 12,252 |
| 35-39 | 12.9 | 2.9% | 3,595 |
| 40-44 | 2.6 | 0.6% | 834 |
| 45-49 | 0.2 | 0.0% | 57 |
| 50-54 | 0.1 | 0.0% | 20 |
Fertility in Bulgaria by year