Overall, the percentage of children in age from birth to 4 years had a dramatic decrease, from demonstrating the best indicator in 1992 and reaching approximately 24 percent in 2001. In contrast, pre-teen children increased to 2001 sharply, getting the highest point among others. There were five times, when the segments were crossed. 

The quantity of adolescents in UK was the highest in the beginning of last twentieth century decade. However, there was a gap in 1994 after which the percentage of teenagers began to arise slightly. 

Little children in the age of 5 to 9 reached their highest percent from 1996 to 1997, then having for one percent less than pre-teens in 2001. Despite 10-14 years children percentage demonstrated the lowest result, it plummeted and got more than fourth of all children under 20.

 

Overall, quantity of children aged 0-4 decreased over the period while the number of children in the 10-14 age group has risen. The other 2 groups have changed but not so significant.

 

In 1990 most of the children were between the ages of 15 and 19, but then but then the number of children in this group began to decrease dramatically. It dropped from 26% to almost 23% and only in 1994 it started to rise gradually. 

The 5-9 group size started at 23% and then slightly increased to 26% until 1996. After that it declined to almost 25%. 

In 1990 the number of children in 0-4 group were almost the same as in 15-19, but then after a small rise it gradually decreased below 24%.

In 1990 the smallest group was 10-14, but then it began to increase gradually. In 2001 this group reached 26% and became the biggest one.

Overall, at the end of presented period (in 2001) the biggest child age group in UK was 10-14 y.e with more than 26%. Moreover, the percentage of this group grew steadily during the all period of the research, starting from the last position and becoming the leader. It is also worth mentioning, that the group, which had a demographic peak in 1991 (children from 0 to 4), became the least presented in population in 2001.

There are two group ages, percentage of which is growing at the second half of presented period. This groups are 15-19 and already mentioned 10-14 y.e. Notably, that group of 15-19 was the leader in the beginning of the research, having about 26% of England children. However this group experienced sharp drop to the bottom of 23% in 1994, and slowly recovered with 25% and the third biggest group in child population at the beginning of the new millennium.

Two another age groups of 0-4 and 5-9 peaked in 1991 and 1997 respectively. However, after mentioned highs both of them started to decrease, having about 25% for 5-9 and 23,5 for 0-4. 

Children under the age of 4 have been the largest part of the population since 1992. Until this year, they were second only to the older generation-children from 15 to 19 years old. The peak population was reached in 1992 at 26%. But after that, their numbers began to drop nonstop. As well as the share of children aged 5-9 years decreased from 1997 to 2001 by 2%.  

 

The largest age group in the early 90s was the oldest age group - children from 15 to 19 years old. But, judging by statistics, this segment of the population has significantly reduced its number from 26% to 23%. Later, this social group was able to recover and by 2001 the percentage quantitative peak reached 25%. Similarly, the age group moving into adolescence (10-14 years) has grown markedly from about 23% in 1990 to its peak in 2001, surpassing the other 3rd age group with 26% of the population.

Overall, the population of young Britons aged 0-9 years apparently saw a decline in numbers over time. In contrast, older children aged 10-19 years increased their population dramatically over the course of 11 years.