The given line graph delineates the number of births given per 1000 people in six age groups in the UK between 1973 and 2008.
Overall, the birth rates in the 30-35 and 35-39 group had experienced a decline throughout the surveyed period, while a reverse pattern had been seen in the other age brackets. Additionally, despite a remarkable decrease, group 25-29 had been consistently the leading age bracket regarding birth rates.
At the beginning of the period, 140 females aged 25-29 per 1000 people had given birth, which had been much higher than the figures for women aged 20-25, under 20, and 40 and over, which were only more than 120, 60, and 20 people respectively. Thereafter, the former group had witnessed a decline to 120 people in 1983 before almost recovering to ist first figure (just under 140 people) in the next decade, finally dropping to approximately 120 women. A downward trend had been also seen in females aged 20-25, as its data had undergone constant and significant decline, falling from around 130 to just about 90 women. Birth rate in the 40 and over bracket had almost exactly mirrored this pattern, albeit at a lower level: it had observed a constant fall of 10 people during the period shown.
However, looking at the remaining age groups, we can see that the trend is somewhat different. Starting at around 70 people, the number of 30-35 – year – old women giving birth had gradually increased to more than 80 people at the end of the given period. Similarly, in 1973, the birth rate in the 35-39 bracket was only 40 people, but later it had shown a marginal rise to about 50 people in 1988, surpassing the under 20 group, and had continued to increase to over 60 people in 2008.