The line graph illustrates the population of a country by three age groups: 0-14, 15-64, and 65 and over, from 1960 to projected figures for 2040. Overall, the population of people aged 15 to 64 exhibited a downward trend, similar to the pattern seen among residents aged 0-14. In contrast, the demographic of people aged 65 and over recorded a sharp increase and is predicted to continue rising through 2040.
Initially, in 1960, the age group from 15 to 64 had the largest population, at approximately 60 million, which was double the population of those aged 0-14. However, this age group experienced minimal fluctuations from 1960 to 2020 before steadily declining to 45 million in the projection for 2040. Meanwhile, the population of people aged 0-14 experienced a steady decrease until 1990, followed by a gradual decline, reaching a minimal level by the final projected year.
Elderly people aged 65 and over contributed to 15 million in 1960 before increasing sharply until 1990, when their numbers converged with those of teenagers under 14. After 1990, this population recorded a steady rise, eventually converging with the 15-64 age group in the forecast for 2040.