The chart shows the proportion of working age adults in four countries from 1960 to 2015. Units are given in percentages.

The line graph illustrates the percentage of working-age adults across four countries—France, the United States, Japan, and Germany—from 1960 to 2050. Overall, the working-age population in all four nations exhibited a similar trajectory, characterized by an initial increase until the 1990s, followed by a subsequent decline heading into the mid-21st century. In France, the proportion […]