The given line graphs represents the portion of the population aged 65 and beyond in different countries such as Japan, Sweden and USA between 1940 and 2040.
Overall, by Projection Japan is showing an uptrend with the just over a quarter of its population over 65 with approximately 27 % in contrast USA lagged behind with slightly above 20% and having the least portion of aged population. Moreover Sweden showed a trend that is edged upward with future projection of 25%.
For Japan, during 1940 to 2000, the graph shows remains relatively constant with some fluctuations and rose markedly just after 2000 till 2040. In comparison Sweden and USA both witnessed a growth in the similar manner with USA leading the list till 1990 whereas Sweden surpassed everyone on the charts during 1990 till almost 2030. During 1980 to 2020 USA indicates a little to no variation with ending in the least number of population above 65 which consisted around 22 %
