This line chart depicts the percentage of people above 65 years old compared with the whole population in three countries: United States, Sweden, and Japan from 1940 to 2040. It is clear from the graph that the ratio increased throughout the period.
According to what is shown, USA and Sweden illustrated similar pattern. Both countries increased gradually from 7. 5 and 9 per cent nearly by 7 per cent respectively in the first 4 decades. After a small dip in the figures of US and Sweden, USA’s ratio sustained at about the same level while the other increased from 13% to 18% reaching its peak at 20% by the end of 2020. After which both populations are projected to rocket up to 25 and 23 proportion for Sweden and USA respectively.
Japan, on the other hand, decreased gradually till it levelled at 3% form 1940 and 1990. A gradual increment by 2% took place till 2007. The ratio will rocket significantly to its peak at 28 percent after a gradual increase beforehand.
To sum, we could say that Japan has a much lower population of aged 56 and over compared with the other two countries except at the last decade. 
This line chart depicts the percentage of  
people
 above 65 years  
old
 compared with the whole population in three countries: United States, Sweden, and Japan from 1940 to 2040. It is  
clear
 from the graph that the ratio increased throughout the period.
According to what  
is shown
, USA and Sweden illustrated similar pattern. Both countries increased  
gradually
 from 7. 5 and 9 per cent  
nearly
 by 7 per cent  
respectively
 in the  
first
 4 decades. After a  
small
 dip in the figures of US and Sweden, USA’s ratio sustained at about the same level while the other increased from 13% to 18% reaching its peak at 20% by the  
end
 of 2020. After which both populations  
are projected
 to rocket up to 25 and 23 proportion for Sweden and USA  
respectively
.
Japan,  
on the other hand
, decreased  
gradually
 till it levelled at 3% form 1940 and 1990. A gradual increment by 2% took place till 2007. The ratio will rocket  
significantly
 to its peak at 28 percent after a gradual increase beforehand.
To sum, we could say that Japan has a much lower population of aged 56 and over compared with the other two countries except at the last decade.