The line graph delineates the proportion of citizens aged 65 and above in Japan, Sweden, and the USA from 1940 to 2040.
Overall, it is conspicuous that all three nations are projected to experience a significant aging of their populations. While the USA and Sweden followed a more gradual upward trajectory historically, Japan is forecasted to undergo a precipitous surge, ultimately becoming the country with the highest elderly ratio by the end of the period.
Regarding the historical data, in 1940, the USA had the highest percentage (9%), followed by Sweden (7%) and Japan (5%). Over the subsequent 40 years, the figures for the Western nations climbed steadily to approximately 15% and 14% respectively. However, Japan’s elderly population bucked the trend, dipping slightly to 3% in 1980. While Sweden’s rate fluctuated, reaching a temporary peak of 20% in 2010, the USA’s figure remained relatively stagnant at 15% for several decades.
Looking ahead, a dramatic shift is anticipated. Japan’s proportion is set to skyrocket from 2020 onwards, overtaking both countries to hit a peak of 27% by 2040. Simultaneously, Sweden and the USA are expected to reach 25% and 23% respectively, culminating in a synchronized global aging trend.