The line chart illustrates the percentage of the population aged 65 and over in Japan, Sweden, and the USA from 1940 to 2040.
Overall, all three countries exhibit an upward trend in this chart. In 1940, the USA had the highest percentage compared to Japan; however, by 2040, their positions will have completely reversed.
To begin with, in 1940, the USA had approximately 9% of its population aged 65 and over, ranking the highest among the three countries. Japan, in contrast, started with around 5%. Throughout the years from 1940 to 2040, Sweden experienced a number of fluctuations, exhibiting both upward and downward movements, while generally increasing. Notably, between 2020 and 2040, its percentage is projected to rise sharply to about 25%.
From 1940 to 1980, the trend in the USA rose from roughly 9% to 15%. Following this, from 1980 to 2020, it continued to progress, albeit with a slight decrease. However, from 2020 to 2040, the percentage is expected to surge from below 15% to approximately 24%. In contrast, Japan witnessed a decline from 1940 until the mid-1980s, after which it began to grow moderately from nearly 3% to 10% by the mid-2020s. Subsequently, it is expected to grow dramatically, reaching 25% and ultimately approximately 27% by 2040.