The graph below shows the proportion of the population aged 65 and over between 1940 and 2040 in three different countries. Summarise the information by selecting and reporting the main features, and make comparisons where relevant

The diagram provides information about the ratio of the population aged 65 and above from 1940 to 2040 in Japan, Sweden and USA.

Aged people both in USA and Sweden have increased over the time period with some fluctuations found in both nations. However, Japan shows an opposite trend till 2000 and thereafter there is a sharp rise in aged citizens until projected year of 2040.

In 1940 less than 10% of USA population used to be aged 65 and over. But after 1960 those people have increased with some degree of fluctuations until 2020 and there is a rapid rise till 2040. It is seen that he number of aged population jumped from 15% in 2020 to about 23% in projected 2040. In fact, Sweden had the same nature as USA. In Sweden only about 7% population were aged 65 and above in 1940 whereas in 2040 it is projected to reach into about 25% which is three times higher than 1940.

Finally, in Japan we find a different trend especially from 1940 to 2000. It is interesting that the number of aged people dropped from 5% in 1940 to about 3% in 1980 and then slightly rose back to 5% in 2000 whereas after 2000 the aged citizens considerably increased till 2020. However, after 2020 there is a sudden rise of aged population from about 7% to more than 25%. It is expected that in 2040 the number of population aged 65 and above will be five times higher than it used to be in 1940.