The population has clearly aged over the last 150 years; the graph shows changes of the population of Humberton from 1801 to 2011. There was a high mortality decline just after 1850, which is indicated on the graph.
This trend of population aging is evident over the last 150 years; the chart shows the changes in Humberton's population from 1801 to 2011. The significant drop in mortality rates following 1850 is also shown on the graph.