The graph below shows the proportion of the population aged 65 and over between 1940 and 2040 in three different countries. v.7

The presented line graph demonstrates proportion of senior citizen in the USA, Japan, and Sweden in a century period between 1940 and 2040. In general, there has been an increase of elder population in all countries observed since 1940 and is predicted to jump up gradually until 2040. Looking at the detail, in Sweden, the population of seniors had gradually increased since 1940. It was about 7% in 1940 and has been improved gradually year to year. Furthermore, it is forecasted that the proportion will keep growing and will hit nearly four times higher, about 25%, in 2040. On the other hand, the USA also showed a rise in the proportion of elderly. It was only started at about 9% in 1940 and has been swelled essentially and is predicted to hit 20% in 2014. Meanwhile, Japan showed an incredible trend of proportion. It was about 5% in 1940 and slowly had declined until around 2005 when it reached almost the same figure as in 1940, and has been dramatically increased and will rise continually to over 5 times higher, around 27%, in 2040.