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

Question

https://images.app.goo.gl/Cww2BJM49Bxg6XkKA

  The line chart illustrates the percentage of the senior citizens who are 65 years old and over in USA, Sweden and Japan from 1940 to 2040 in 20-year intervals.

      Overall,  the proportions of people at the age of 65 and over of the three countries are predicted to increase.  Additionally, it is also worth pointing out that the figure for Japan will surpass the others despite of its fewer percentage in the early 40s.

       A quick glance at the chart reveals that at the beginning of the period, people who are 65 and over accounted for 5%, 6% and 8% in Japan,  Sweden and USA respectively. In 1960, the quantities of Sweden an USA went up slightly to 10%. Showing a contradictory pattern,  that of Japan experienced a decrease to 3% simultaneously . In addition, between 1960 and 2000, there were dramatic fluctuations in the percentages of people aged 65 and over of Sweden and USA whilst the figure of Japan went through a period of stability, before recovering to over 5% in 2000.

         Turning to the other sets of data,  in the next 20 years,  in comparison with the proportion of people at the age of 65 and over in Japan,  which has witnessed a significant growth by around 5%, the quantities of Sweden and USA has continued to fluctuate. At the end of the period, it is foreseen  that there will be 27%, 25% and 23% of people aged 65 and over in Japan,  Sweden and USA respectively.