The line graph illustrates the proportion of people aged 65 and over in three countries between 1980 and 2020.
Overall, the percentage of elderly people increased in all three countries over the period shown. Country A consistently recorded the highest figures, while Country C remained the lowest throughout. Country B occupied a middle position, following a steady upward trend.
In Country A, the proportion of people aged 65 and over rose steadily over time, maintaining a clear lead over the other two nations. Starting at around 10% in 1980, the figure increased gradually in each decade, reaching approximately one fifth of the population by 2020. Although the growth was not sharp, the gap between Country A and the others remained noticeable throughout the entire period.
By contrast, Country C recorded the smallest share of elderly residents despite a continuous increase. Its figure grew slowly from about 4% to just under 10% by the end of the period. Country B, meanwhile, showed moderate growth, rising from roughly 7% to 15%, and consistently ranked between Countries A and C without any dramatic fluctuations.