The line graph compares the proportion of the working-age population (15–64 years) in Japan, France, Korea, and Mexico from 1970 to 2010.
Overall, while Korea and Mexico experienced upward trends, Japan witnessed a notable decline, and France remained relatively stable.
In 1970, Japan had the highest percentage of working-age individuals, at approximately 67%, a figure that remained steady until 2000 before dropping sharply to 60% by 2010. By contrast, Korea, which started with 55%, recorded the most substantial growth. It surpassed all other nations by 1990 and, by 2010, nearly three-quarters of its population were of working age, the highest among the four countries.
France consistently maintained a working-age population of over 60% throughout the period, exhibiting minimal variation. Meanwhile, Mexico began with the lowest proportion, below 50%. However, its figure rose steadily, surpassing 65% by 2010, overtaking Japan.
In summary, Korea and Mexico displayed notable increases, while Japan saw a decline, and France’s proportions remained largely unchanged.