The line graph illustrates the percentage of the working-age population in four countries between 1960 and 2050.
Overall, all four countries experienced an increase in the proportion of working-age adults until about 1990, after which the figures declined. The United States appears to be the most stable country compared to Japan and Germany, while France shows relatively moderate changes.
All four countries increased steadily from 1960 to around 1990. In 1960, Germany had the highest percentage, showing about 67%, while the United States had the lowest at about 60%. France and Japan stood at around 62% and 65% respectively. All countries except for Germany rose steadily, with Japan reaching a peak of 70% in 1990, the highest figure on the chart. Germany also peaked at approximately 69% in the same year.
After 1990, the proportions began to decrease in every country. Japan experienced the sharpest drop, falling to just about 50% by 2050, which is projected to be the lowest percentage on the chart. Germany is also predicted to decline significantly to around 55 %. In contrast, the United States and France are both anticipated to remain higher and more stable, ending at approximately 57-60%.