The chart and table illustrate the average number of children born to one woman and the average age at which women had their first child in the UK and Kazakhstan from 1920 to 2019.
Overall, the fertility rate showed a declining trend in both countries, while the average age of mothers at first childbirth increased steadily. Kazakhstan consistently had higher fertility rates but lower ages for first childbirth compared to the UK throughout the period.
In 1920, women in Kazakhstan gave birth to about 3.3 children on average, slightly more than the UK’s 2 children. The fertility rate in Kazakhstan peaked at around 4.5 children in 1960 before declining sharply to about 2 by 2000. By contrast, the UK’s figure rose modestly to around 2.8 in 1960 and then dropped gradually, remaining just below 2 in 2019.
Regarding the age of first childbirth, UK women were generally older than Kazakh women. In 1920, British women had their first child at around 26.5 years, increasing slightly to 28.9 years in 2019. Kazakh women, on the other hand, started at a much younger age of 23.5 years in 1920, which rose steadily to 27.6 years by 2019.
In summary, as the age of first childbirth increased over time in both countries, the average number of children per woman declined, suggesting a clear inverse relationship between these two indicators.