Births per 1,000 women, by age of mother

Fertility in Less developed regions, 1981

Less developed regions
1981
Total fertility rate: 4.34
Total fertility rate, 1950–2100 · click to pick a year

Year

-5 -1   1981  +1 +5

Country

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

The total fertility rate of Less developed regions was 4.34 children per woman in 1981 — above the replacement level of about 2.1. Births were most frequent among women aged 20-24 (233 per 1,000 women in that age group), and the average mother was 28.1 years old. In total, 113,690,352 babies were born. Source: United Nations, World Population Prospects 2024.

Total fertility rate
4.34
Births
113,690,352
Births per 1,000 people
33.1
Mean age of mothers
28.1
Births to mothers aged 15–19
14.2%
Net reproduction rate
1.74
Boys per 100 girls at birth
105.8
Population
3,436,923,066
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.
Mother's ageBirths per 1,000 womenShare of total fertilityBirths
10-145.70.7%1,170,442
15-1987.210.0%16,162,027
20-24233.326.8%35,078,814
25-29227.926.2%31,406,697
30-34155.917.9%16,835,497
35-39101.211.6%8,655,649
40-4447.45.4%3,634,854
45-4910.21.2%707,970
50-540.60.1%38,341