The graph illustrates the age structure of the Japanese population since 1960, including estimated data through 2040.
It is clear that the percentage of children under the age of 14 and adults aged 25 to 64 has a downward trend during the entire time, while the number of people over 65 will increase significantly by 2040.
Looking at the information in more detail, we see that in 1960, the proportion of people aged 25 to 64 was 65%, and this was the largest index compared to others. Then it fluctuated minimally between 1960 and 1990, and will fall rapidly to about 68 % by 2040. The number of population aged 0 -14 years varied considerably during the period from 1960 to 2000, after that, it declined slightly and is likely to reach at least 10 percent by the end of the period.
It can be seen that the figure for the age group over 65 was the lowest at the beginning of the period. It remained stable for one year, then began to grow dramatically from 1970, overtook the indicators of the youngest population group around 2005, and is most likely to become the highest, reaching a peak of 35 percent by 2040.