The charts below show the population figures in one town between 1951 and 2011. The first chart shows the size of population and the second shows the age groups of population. (NB For the first chart, the vertical axis should be rcorded by the number of people. For the second chart, only the main features and trends can be recalled rather than the specific figures.) Summarise the information by selecting and reporting the main features, and make comparisons where relevant.