The line chart illustrates the changes in the United Kingdom natality rate in 6 various age categories from 1973 to 2008.
Overall, even though the general rate of childbirth per thousand people declined, it increased in age groups from 30 to 39. The group of humans between 25 and 29 had the highest rate of birth in both 1973 and 2008, as well as people aged 40 and over remained having the lowest.
In 1973, in the category from 30 to 35, the birth rate per 1000 people was just above 70, then it saw a linear growth until 1983, when it continued to slightly increase. From 1973, the 35-39 group experienced a small fluctuation but stayed relatively unchanged, yet, in 1988, it dramatically increased from just above 40 to nearly 65 during one decade, and then remained constant.
During the period from 1973 to 2008, the category from 25 to 29 experienced a dramatic fluctuation, which ended in falling from 140 to 120. The number of birth in the group 20-25 gradually declined from about 125 to nearly 95, with only a small fluctuation in 1978. Moreover, the youngest category of individuals under 20 saw a steady drop from 60 to 40. Lastly, group aged 40 and over, was slightly erratic, however decreased from 20 to about 10.