The line graph illustrates the percentage of people aged 65 and above in Japan, Sweden, and the USA over a century from 1940.
Overall, there is a significant increase in the proportion of the elderly in all three countries examined, with the share of elderly people in Japan witnessing the most considerable rise and eventually becoming the highest figure among the three nations.
In 1940, the proportion of people aged from 65 upwards in the USA started at about 9%, compared to the figures for Sweden and Japan, at around 7% and 5% respectively. After five decades, just under 15% of the population were elderly people in both Sweden and the USA, while the figure for Japan experienced a fluctuation in the range from 3% to 5%.
The proportions of people aged 65+ in the population of Sweden and the USA are expected to rise, reaching nearly a quarter for Sweden and 23% for the USA in 2040. A similar change can be seen in the figure for Japan, but to a much greater extent, which is expected to see a five-fold increase, from around 5% in the early 2000s to approximately 27% in the final year of the period.