Births per 1,000 women, by age of mother

Fertility in Less developed regions, 1991

Less developed regions
1991
Total fertility rate: 3.49
Total fertility rate, 1950–2100 · click to pick a year

Year

-5 -1   1991  +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 3.49 children per woman in 1991 — above the replacement level of about 2.1. Births were most frequent among women aged 20-24 (210 per 1,000 women in that age group), and the average mother was 27.3 years old. In total, 123,331,442 babies were born. Source: United Nations, World Population Prospects 2024.

Total fertility rate
3.49
Births
123,331,442
Births per 1,000 people
28.9
Mean age of mothers
27.3
Births to mothers aged 15–19
14.2%
Net reproduction rate
1.45
Boys per 100 girls at birth
107.0
Population
4,262,779,733
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
10-145.00.7%1,115,972
15-1982.511.8%17,554,363
20-24210.230.1%42,407,155
25-29180.025.8%32,572,661
30-34116.516.7%17,046,676
35-3965.39.3%8,716,614
40-4430.94.4%3,212,034
45-498.21.2%667,087
50-540.50.1%38,895