The line graph illustrates the percentage of people aged 65 and more in three countries over a period of 100 years.
It is clear that the proportion of elderly population increased in each country over the period shown. Overall, The USA and Sweden had the steady growth of elderly people, while Japan experienced a rapid rise from 2020.
In 1940, the proportion of people aged 65 and over in the USA was about 9%. The figures for Sweden and Japan were lower, at about 7% and 5% respectively. Over the next 50 years, from 1940 to 1980, elderly people in both the USA and Sweden rose gradually, reaching just under 15% in 1990. By contrast, the figure for Japan slightly decrease to 3%.
From 2030 to 2040, there was a sudden increase in the number of elderly people in Japan, with a jump of over 15% in 10 years, reach the highest point at about 27% compared with 2 other countries.