This line chart shows the proportion of the population aged 65 and over between 1940 and 2040 in three different countries. According to the figure, it can be seen that there was an increasing trend in the ageing population in Japan, Sweden and the USA. Dating back to 1940, the proportion of aged 65 and over at the level of 5% in Japan, 7% in Sweden and approximately 9% in the US. However, the percentage of ageing people dropped from 5% in 1940 to 3% in 1980 while figure in Sweden and USA up to 15% gradually. From 1980 to 2020, the statistic keeps rising in Sweden and Japan, but one interesting finding is that the percentage of America changes slightly, which is about 15%. In addition, the proportion of older people will continue to increase in the next two decades in three countries and the years from 2020 to 2040 see a significantly surge in Japan. In brief, the general trend indicates that the proportion of elder people will be similar in the three countries when 2040. 本文来源：https://www.wddqw.com/doc/33db446810a6f524ccbf85a4.html