A breakdown of the information about aging societies' numbers in three different developed countries during a century, started in 1940 presented in the line graph measured by percent. At a glance, all figures show an upward trend meanwhile the Japan populaces' number dominates the trend.
Initially, there were roughly 10% of USA and Sweden societies are elderly people. Both of figures rose steadily in first 50 years to around 15%. While a contrast trend experienced by Japan as aging population decreased slowly to around 3% in 1980. Nevertheless, a remarkable incline is predicted will be faced by the latter in 30 next years since it rises its number considerably at present.
Furthermore, an intersection was experienced by Sweden and USA as the former figure overtook the trend by its rising level to 20% while the other party remained stable. The surprising trend will be offered by Japanese as it will dramatically rocket to over 25% and reach its peak thus therefore its exceed the other two figures.