W1 - Population ages 65 and above (% of total)

The line graph illustrates the percentage of  population aged 65 and over  in three different countries from 1940 to 2040 . A quick glance at the reveals that  Japan , Sweden and the US witnessed an upward trend  with Japan always being lower than the rest ones in the rate of population aged 65 and over in most periods.

To specify , After a slight decline from 5% in 1940 to about 3% in 1982 , the proportion of of residents in the age over 65 in Japan rockets from  4% in 1983 to a peak of 27 % in 2040.

By comparison, The ratio of  population aged 65 and over in  the US experienced a significant rise to the highest point of 23%  in  2040  , after a fluctuation between 9 % and 14 % for the first 80 years.

Similarly , There was an upward fluctuation from  the lowest point of  approximately 7% in 1940 to a zenith of around 25% in 2040 , which is clearly seen in Sweden.

An interesting feature is that although Japan is lower than the other countries  in the proportion of aged 65 and over in most periods , its figure surpasses the rest ones by 1,2 times in the final year.