The given line chart depicts the percentage of residents aged 65 and over in three distinct nations namely USA, Sweden, Japan from 1940 to 2040.
From an overall perspective, the proportion of the population all varied with different ratios in which the one in Japan mostly stayed at the top whereas the opposite was true for USA in 2040.
To be more specific, the figure for people aged 65 and over who live in USA rose considerably from under 10% to about 15% between 1940 and 1980. There was a fluctuation between around 13% and 23% in the proportion of the American people aged above 64 over a 40-year period.
In regard to the rate of the population in Sweden, it witnessed a consistent growth from just 7% to nearly 15% during the 40 years of survey, starting in 1940 before going up dramatically to approximately 25% in 2040.
Regarding the remain categories, the percentage of the Japanese inhabitants who aged 65 and over underwent minimal decline from 5% to only 3% from 1940 to 1980. The report on the rate of the one climbed remarkably from merely 4% to above 25% which surpassed those in Sweden and hit the peak in the last given period of the survey.
