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

The line graph illustrates the percentage of the

population

aged 65 and over from 1940 to 2040 in the

USA

,

Sweden

, and Japan.

Overall

, all three countries experienced an upward trend during the specified period. Among these countries, Japan is expected to have a rapid increase towards the end of the period. In the

USA

and

Sweden

, the proportion of the

population

aged 65 and over followed a similar pattern. Starting at just below 10% in the

USA

and 7% in

Sweden

in 1940, the figures gradually increased. By 1980, both countries reached around 15% of the

population

aged 65 and over. In the

USA

, the percentage remained stable until 2020 but saw a dramatic growth to about 22% in 2040.

Similarly

,

Sweden

experienced a steady rise to 15% in 1980, surpassing the

USA

in that year.

On the other hand

, Japan consistently saw an increase in the percentage from 5% in 1940 to 10% in 2030.

However

, it is projected to have a sharp surge to 27% in 2040, surpassing both the

USA

and

Sweden

and becoming the country with the highest proportion of the

population

aged 65 and over.