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 given line graph illustrates the

percentage

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of elderly people in Japan, Sweden, and the

USA

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from 1940 to 2020, with projections until 2040.

Overall

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, the

proportion

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of the three different

countries

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has increased since 1940 and is expected to continue rising until 2040.

Moreover

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,

while

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the

percentage

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of the population aged 65 and over in the

USA

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was the highest at the start, it is estimated that

this

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figure will be overtaken by Japan by the end of the period. In terms of

countries

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with a high

proportion

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at the start, the

proportion

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of the

USA

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stood at just below 10% in 1940. The figure

then

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rose moderately to precisely 15% in 1980 before remaining relatively steady until 2020.

Thereafter

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, it is projected to experience a significant growth of around 8% to finish at 23%.

Likewise

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, the

proportion

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in Sweden was approximately 7% in 1940. From

this

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point onwards, it witnessed a significant climb,

thus

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surpassing that of the

USA

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at about 18% in 2020. In the following 20 years, it is predicted that it will rise moderately, ending slightly above that of the

USA

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at 25% in the final year. Regarding the country with the lowest old-age population at the beginning, the

percentage

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in Japan started at almost half that of the

USA

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at 5% in 1940.

In contrast

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to other

countries

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, the

percentage

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fell to around 3% in 1960 and remained steady until 1980.

However

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, the

proportion

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rose moderately to exactly 10% in 2020 before it is expected to skyrocket and overtake those of the other two

countries

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at about 27% in 2040.