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 line graph illustrates the percentage of the population aged 65 years and plus in the USA, Sweden and

Japan

over the period of 1940 to 2040.

Overall

, the graph depicts an increase in population for all the countries despite some fluctuations of data in between. In 1940, the USA had the highest number of elderly residents at around 9%

while

Japan

had the lowest at 5%. For the USA, the numbers kept increasing to 10% in 1960

,

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and

then

jumped to 15% in 1980.

Then

it started to fall below 15% in 2020;

however

, it has been rising since

then

and is expected to reach 23% by 2040.

Although

Sweden was lower than the US

initially

at 14% in 1980, it sharply rose to 20% in 2010 and is expected to overtake the US and peak at 25% by 2040.

Japan

remained lower than the rest consistently from 1940 to 2000 at around 5%.

Nevertheless

, its data is expected to double to 10% from 5% by 2030.

Also

,

Japan

is to witness a massive spike of an estimated 27% with the highest number of aged people than others by 2040.