The first bar chart illustrates the number of people populating a particular British town between 1951 and 2011, while the second bar chart gives information about the distribution of 5 age groups at the same town during the same period of time.
Overall, the town experienced a major growth of population, increasing in 1.75 times from 1951 to 2011. The number of people younger than 29 got slightly bigger over the years, the growth is even more dramatic for residents aged 65 and more. However, people from the age group from 30 to 64 declined during the given 50 years.
The town population doubled since 1951 to 2011, it grew from 100000 to 200000. Yet the population shrinked till 2011, when 175000 residents lived in the town.
Age groups 0-14 and 15-29 experienced very similar dynamics, growing from around 18% to 20%. The age group 30-39 was most turbulent of all cohorts, the percentage went up and down from 19% in 1951 to 12% in 2011. The number of people between 40 and 64 years old dropped significantly from 45% to 20%. And the percentage of senior citizens aged 65+ skyrocketed from 10% to 25% of the town’s population.