Births per 1,000 women, by age of mother
Fertility in Bulgaria, 1988
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1988
Total fertility rate: 1.97
The total fertility rate of Bulgaria was 1.97 children per woman in 1988 — below the replacement level of about 2.1. Births were most frequent among women aged 20-24 (181 per 1,000 women in that age group), and the average mother was 23.9 years old. In total, 117,454 babies were born. Source: United Nations, World Population Prospects 2024.
Key indicators, 1988
Total fertility rate
1.97
Births
117,454
Births per 1,000 people
13.1
Mean age of mothers
23.9
Births to mothers aged 15–19
20.7%
Net reproduction rate
0.94
Boys per 100 girls at birth
105.8
Population
8,985,715
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, 1988
| Mother's age | Births per 1,000 women | Share of total fertility | Births |
|---|---|---|---|
| 10-14 | 1.6 | 0.4% | 532 |
| 15-19 | 77.3 | 19.6% | 24,310 |
| 20-24 | 180.6 | 45.9% | 51,194 |
| 25-29 | 90.4 | 23.0% | 27,361 |
| 30-34 | 32.1 | 8.1% | 10,187 |
| 35-39 | 9.7 | 2.5% | 3,219 |
| 40-44 | 2.0 | 0.5% | 622 |
| 45-49 | 0.1 | 0.0% | 21 |
| 50-54 | 0.0 | 0.0% | 10 |
Fertility in Bulgaria by year