The graph below shows the proportion of the population aged 65 and over between 1940 and 2040 in three different countries

The line graphs depict the information about the argument of the population aged 65 and above in the country for Japan, Sweden, the USA between 1940 to 2040.
Overall, it can be manifested that there was a Japanese increase percentage in 2040 and Japan was the lowest percentage in1940. Sweden was a small percentage decrease from 1980 to 1990. and the USA was the highest percentage in 2040.
First of all, the year 1940 was Japan is 5% and 1960 to 1980 was the around same percentage(4%). and Sweden in 1940 was something 7% and 1960 Sweden are 9% and 1980 was around 14%. and the USA was 9% in 1940 and 1960 to1980 was increased percentage
Secondly, the year 2000 was around 4% in Japan and 2020 to 2040 was increasing and increasing the percentage Sweden was 2000 year are the percentage In 17%. and 2020 was around 18% and 2040 was 25% in Sweden. The USA was 14% in 2000 and 2020 was the percentage different 15%. respectively, 2040 was the USA percentage in 28%.