The given line chart illustrates how female birth rates divided into six age groups in the United Kingdom changed from 1973 to 2008.
Overall, there is a considerable decrease in the birth rates of women under 25 and over 40, while an opposite trend can be seen in that of the 30-to-39 age bracket. In addition, females who were 25 to 29 hold the highest rate, and the oldest ones remained at the bottom over the examined period.
The 25-to-29 group started with 140 births per 1000 people in 1973, ranking at the highest position, after which the figure fluctuated around 130 before finishing at 120 births per 1000 in 2008, maintaining its rank. Followed in the second and third places were women at 20 to 25 and at 30 to 35. While the former fell steadily from just over 120 to 90 births in 1000 females, the latter grew gradually by 15 from 70 times.
About 60 births were given in 1973 by young females (under 20), at fourth position, with a subsequent decrease to nearly 40, which was surpassed by the figure for the 35-39 group in around 1990. Then the older group continued to rise to above 70 births, whereas the figure for the eldest women declined constantly from 20 to only 10 in the end, making it the smallest birth rate.
