The table illustrates demographic shifts in the UK across three specific years: 1961, 1991, and 2011, focusing on the total population and specific age groups of 15 and 75.
Overall, the total population rose consistently from 46.196.200 in 1961 to 56.065.700 in 2011. A notable trend is the inverse movement between the two age groups: the proportion of 15-year-olds decreased over the period, while the proportion of 75-year-olds saw a marked upward trend.
Regarding the younger cohort, the percentage of people aged 15 fell from 1,48% in 1961 to 1,23% in 2011. Interestingly, the number of females aged 15 remained relatively stable, hovering around 333.700 to 335.730. Conversely, the number of males aged 15 grew from 349.400 in 1961 to 354.400 in 2011.
In contrast, the elderly population showed substantial growth. The percentage of people aged 75 rose from 0,55% in 1961 to 0,70% in 2011. The number of females in this age group peaked at 254.900 in 1961 before declining to 210.100 by 2011. Meanwhile, the number of males aged 75 increased from 160.200 in 1961 to 181.300 in 2011, reflecting a broader demographic shift towards an ageing population.