The graph illustrates children by age group as a percentage of the population in the United Kingdom around 1990 and 2001.
Overall, the yellow line was at the bottom and increased slowly. And the red line is increased slightly. But other lines were at the top and decreased noticeably.
The blue line is started at the top which is equal to 26 percent and was decreased significantly from 1990 to 2001. After decrease the blue line is stopped between 23 and 24 percent. The second largest line was the purple line. From 1990 to 2001 the purple line is declined by 1 percent, purple line is the children whose age between 15 and 19. After declining purple line was accounted at 25 percent.
Between 1990 and 2001, the lowest line was yellow line. The yellow line is started at the 23 percent and was improved quickly by 3 percent. Yellow line is children whose age between 10 and 14. The red line is started between 24 and 25 percent in the 1990 and by 11 years this line was escalated steadily and stopped at the 25 percent. The red line is the children whose age from 15 to 19.