英国儿童在年轻人口中的占比Children as a percentage of the young population in the United Kingdom

The line graph illustrates how the proportions of four age cohorts (0-4, 5-9, 10-14, and 15-19) changed as a percentage of the young population in the UK over the period from 1990 to 2001. Overall, there is a clear divergence in trends among the age groups: the youngest children (0-4) steadily declined in their share, while the 10–14 age bracket experienced a continuous rise and ultimately became the largest proportion of the young population by the end of the period. The 5-9 and 15-19 groups exhibited more modest fluctuations. In 1990, infants (0-4) and older adolescents (15-19) each made up just over a quarter of the youth demographic. Children aged 5 to 9 accounted for approximately 24%, and 10–14 year-olds were the smallest group at 23%. During the first two years, the percentage of 0–4-year-olds briefly increased before embarking on a gradual decline, ending the period at slightly above 23%. In contrast, the 10-14 cohort rose steadily throughout the decade and approached the mid-26% range by 2001. Meanwhile, the proportion of children aged 5-9 peaked around the mid-1990s (1995-1997) at just over 26%, but then decreased somewhat to finish at slightly more than 25% in 2001. The 15-19 age group dropped in the early 1990s, bottoming out around 1994, then made a modest recovery and ended roughly where it started, close to 25%.