The line graph illustrates how the percentage of the working-age population in four countries change, from 1960, with predictions extending until 2050.
Overall, all countries are expected to decrease significantly after brief peaks in various years. The working-age inhabitants of Japan and Germany, initially showing the highest levels, are predicted to represent the lowest rates later, while other two countries are forecast to surpass those countries.
German and Japanese adults, which illustrated more than a high of 65% at the beginning, are forecast to drop in sharp increments to a low of above 51% in 2050, after reaching peaks in 1990. Germany, however, exhibited a sharp shift in numbers, rising from 63% in the 1960s to almost 70% in the 1990s.
The labour-capable aged citizens of France and the USA, on the other hand, went through the fluctuations in proportion. Starting from above 60% in 1960, the rate acquired their highest ranks of 66% and 67% respectively between 1990 and 2000. The rates represent higher levels in 2050, showing 57% and 60%.