This given chart demonstrates how the birth rate for women in 6 different age groups in the UK in the period between 1973 and 2008 changed.
Overall, the birth rate for women at 30 to 35 and 35 to 39 witnessed an upward trend while the rest experienced a downward trend. Interestingly, the birth rate for women at 25 to 29 was always highest while that of women at 40 and over was always lowest from 1973 to 2008.
Looking at the details, the birth rate for women in the 30 to 35 age group increased in the period of time from 1973 to 2008, from about 70 births per 1000 people to approximately 85 births per 1000 people. The figure for women in the 35 to 39 age group moderately rose from about 40 to approximately 65 births.
The birthrate for women in the 25 to 29 age group dramatically decreased by about 20 births per 1000 people in the first 10 years. Then, this figure peaked in 1993, around 135 births, and declined to 120 births in 2008. That of women at 20 to 25 was about 125 births in 1973 and drop 35 births during next 35 years. Besides, the figure for women under 20 age was about 60 births per 1000 people in 1973 and decreased to around 40 births in 2008. The birth rate of women at 40 and over slightly fell from about 20 births to around 15 births in this period.