The line graph shows the three trend changes of the elderly population from 1940 to 2040 in Japan, Sweden and USA.
To start with, the proportion of the elderly people were only 5, 7, and 9 percents with Japan holding the least figure in 1940. The percentages of Sweden and USA increased drastically to about 14 and 15 percents respectively. However, the percentage of Japan decreased to only about 3.
The trends changed after 1980. The percentage of elderly people in Japan went up slightly, and the trend in USA remained stable at around 15. But the people who aged over 65 in Sweden increased suddenly from 14 to 20 and moved slightly down after 2010.
Starting from 2010 the three figures are increasing dramatically until 2040. The figure of Japan will be climbing from 10 to about 28 percent in 2020. In addition, the aging population of Sweden and USA will grow continually to about 26 and 23 percents.
In conclusion, by 2040 about a quarter of population will be elderly people in the three countries with the highest figure of 28 in Japan.
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