The total fertility rate of Less developed regions is projected at 1.87 children per woman in 2099 — below the replacement level of about 2.1. Births are projected to be most frequent among women aged 25-29 (111 per 1,000 women in that age group), and the average mother would be 30.0 years old. In total, 100,176,967 babies are projected to be born. Source: United Nations, World Population Prospects 2024 (medium-variant projection).

Key indicators, 2099

Total fertility rate

1.87

Births

100,176,967

Births per 1,000 people

11.1

Mean age of mothers

30.0

Births to mothers aged 15–19

4.0%

Net reproduction rate

0.89

Boys per 100 girls at birth

104.4

Population

8,998,538,364

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, 2099

Mother's age	Births per 1,000 women	Share of total fertility	Births
10-14	0.2	0.0%	41,854
15-19	15.3	4.1%	3,983,787
20-24	62.8	16.8%	16,594,685
25-29	110.6	29.5%	29,591,416
30-34	108.8	29.1%	29,296,369
35-39	57.9	15.5%	15,617,149
40-44	16.6	4.4%	4,480,281
45-49	2.0	0.5%	552,952
50-54	0.1	0.0%	18,375

Fertility in Less developed regions by year

Fertility in Less developed regions, 2099

Year

Country