The line graph represents how the birth rate of British women in six different age ranges changed between 1973 and 2008.
Overall, the birth rate of women aged 40 and over was always the lowest, in total contrast to those in the 25-29 age bracket. In addition, the number of births recorded among women in their early and late thirties increased, while there were either downward trends or fluctuations among the other age groups.
Specifically, the birth rate of women in the 25-29 age group fluctuated between 120 and 140, in which the starting point was the peak, and the lowest point was seen around 2000. The group of 20-to-25-year-olds ranked second, although its figure fell markedly. The birth rate for women aged 30-35 came third, increasing from 70 to 85.
The data of the youngest group (under 20) and those in their late thirties (35–39) show a swap in their positions, with a dip for the former and a rise for the latter, between 40 and 60. Finally, the birth rate of women aged 40 and above witnessed a decrease, though marginal, from 20 to 15.