The line diagram demonstrates how the proportion of children in different age groups changed in the United Kingdom from 1990 to 2001.
The chart divides children into four groups: 0-4, 5-9, 10-14, and 15-19. Overall, while the share of the youngest group decreased throughout the recorded time period and the 10-14 group increased year on year, the other two groups followed variable trends.
In 1990, the youngest children were the second most common group after the oldest one, as they formed a little under and a little over 26%, respectively. The proportion of the 0-4 group then increased slightly to reach a peak of about 26.5% in 1992, before decreasing gradually to just below 24% in 2001, when they were the least common of the recorded age groups. Conversely, the 10-14 age group had the smallest share in 1990, which amounted to just above 23%. However, their proportion increased constantly over the years till they were the most common age group among children in 2001, amounting to more than 26% of children.
The 5-9 and the 15-19 age groups followed opposite paths, with the former increasing slightly from about 24.7% in 1990 to just above 26% in 1997, before falling gradually to around 25% in 2001. Conversely, the latter had a sharp fall from over 26% in 1990 to about 23% in 1993, the proportion continued to fall slightly before starting to increase again in 1995, continuing to rise till 2001, when it was just below 25%.