The graph compares how birth rates changed across six age categories in the United Kingdom between 1973 and 2008. The unit measurements are given in births per 1000 people.
It can be clearly seen that the highest rates occurred in ages from 20 to 35. Additionally, for adults aged 35-39 years, birth rates showed an upward trend over the whole period. In contrast, those who were under 20 and over 40 years demonstrated the lowest numbers.
Women under 20 and 20-25 experienced practically the same trend; both figures fell by 20 births per 1000 people. Although the next group, 25-29, noticeably fluctuated, it had a gradual decrease from 140 units to 120. Despite an increase in 1983, the number dived back.
Meanwhile, age groups 30-35 rose progressively by 15 births over the next three decades. Similarly, for females aged 35-39, the birth rates remained unchanged until 1988, after which they climbed significantly, over 60 births per 1000 people. Eventually, those 40 and over, in comparison with other categories, stayed at the bottom, but even though, slid far lower.