The line graph represents how the female childbirth rate among 6 different age ranges in the UK changed between 1973 and 2008.
It is clear that the birth rate of women at the age of 40 and above was always the lowest, compared with those who are from 25 to 29 years old. In addition, although the rate of birth recorded from the females between the early and late thirties increased, the others had a decreasing trend.
In 1973, the female birth rate in the age group of 25 to 29 ranked the highest which changed constantly between 120 and 140 over the years. This was followed by the 20 to 25-years-old ones, with a birth rate ranging from 90 to 120 births per 1,000 individuals and the females at the age of 30 to 35, varying between 70 and 80.
From 1973 to 2008, there were only two age groups of the females including the age of 35 to 39 at 40 to about 60 and 30 to 35 years old ones, from about 70 to 80 which showed an increasing trend in the proportion of childbirth. By contrast, the others markedly exhibited a remarkable decrease, while the birth rate of British females aged 40 and over experienced an inconsiderable reduction in the period, account for about 5 birth per 1000 people.