The line graph illustrates the percentage of inhabitants aged 65 and older in three different nations (USA, Sweden and Japan) between 1940 and its prediction in 2040.

The line graph shows the population

in

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the

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age

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of

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65

years

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and over in three different countries, including the USA, Sweden, and Japan, from 1940 to the next century.

Overall

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, it can be seen apparently that the elderly in Japan had the lowest proportion in the first year,

however

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, it is predicted to rank in first place, in 2040.

Conversely

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, there was a similar trend in the USA and Sweden, which experienced an upward trend throughout the period.

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the graph, the USA had around 9% of retired citizens at the beginning before slightly increasing to 10% twenty

years

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later

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and

then

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fluctuated from 10% to reach 23% approximately in the final year.

Similarly

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, the number of elderly people in Sweden rose from around 7% to nearly 10% in the first 20

years

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, before fluctuating to 26%

at the end

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of the period.

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, the proportion in Japan accounted for 5%, in 1940,

then

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gradually decreased to about 3% and steadily remained for around 30

years

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. Afterwards, the figure went up significantly to 10%, in 2020, which eventually climbed up sharply to just above 25% estimate, in 2040.