The line graph compares the number of people aged 65 and over in the three different countries, namely Japan, Sweden, and the USA since 1940 with predictions to 2040.
Overall, there are considerable upward trends in the percentage of people aged 65 and over in the three countries over the given period. It’s noticeable that Japan’s elderly population is predicted to have the sharpest increase.
As is shown, at the beginning of the reported period, the proportion of people aged 65 and over in Japan was 5%, followed by a slight growth to about 7% in 2020. After that, this rate is expected to have a rocket and peak at about 27% in 2040.
By contrast, in the USA, the population rate started at under 9% in 1940 before a steady increase to 15% in 1980 and remained almost unchanged until 2020. Predictions show that this proportion will peak at 23% in 2040.
In Sweden, a fluctuating climb in the percentage of old people from nearly 7% in 1940 to under 20% in 2020. Predictably, the figure for Sweden will continue the existing trend and peak at around 25% in the final year. 
The line graph compares the number of  
people
 aged 65 and  
over
 in the three  
different
 countries,  
namely
 Japan, Sweden, and the USA since 1940 with predictions to 2040. 
Overall
, there are considerable upward trends in the percentage of  
people
 aged 65 and  
over
 in the three countries  
over
 the  
given
 period. It’s noticeable that Japan’s elderly population  
is predicted
 to have the sharpest increase.
As  
is shown
, at the beginning of the reported period, the proportion of  
people
 aged 65 and  
over
 in Japan was 5%, followed by a slight growth to about 7% in 2020. After that, this rate is  
expected
 to have a rocket and peak at about 27% in 2040.
By contrast, in the USA, the population rate  
started
 at under 9% in 1940  
before
 a steady increase to 15% in 1980 and remained almost unchanged until 2020. Predictions  
show
 that this proportion will peak at 23% in 2040.
In Sweden, a fluctuating climb in the percentage of  
old
  people
 from  
nearly
 7% in 1940 to under 20% in 2020.  
Predictably
, the figure for Sweden will continue the existing trend and peak at around 25% in the final year.