The line graph shows population rates of over age 65 between 1940 and 2040 in three countries(Japan, Sweden and the USA). There is a certain tendency of growth.
In 1940, the USA had almost 10% of old people, followed by approximately 7% in Sweden and 5% in Japan. After 1940, Sweden and the USA rates were consistent rise, but around in 2000, It is expected that the USA rates of increasing tendency stop until the 2020 while Sweden proportion of old people is expected that its value grow gradually. At that time, Japan's figure which was not increase till 2000 is expected that there is a sharp rise between around 2030 and 2040, and even its figure will be higher than other two countries.
Overall, proportion of over age 65 people population will be bigger than now and its tendency is not only two western countries but also in Japan. Over 2040, the three countries of proportion of elderly people will be similar.
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