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.
Over the past 150 years, the population of Humberton has undergone a notable aging process, as demonstrated by the chart showing changes between 1801 and 2011. Following a substantial decline in mortality rates around 1850, this trend is highlighted on the graph.