The bar chart illustrates the proportion of the world population in four different countries—namely, India, China, the U.S.A., and Japan—between 1950 and 2000 and also indicates the projection for 2050.
Overall, what stands out from the chart is that the highest proportion of the world population was in China from 1950 to 2000 and also will be projected to be in India in the year 2050. By contrast, Japan saw the biggest fall in its population during these years.
In terms of China, the proportion of the world population was higher in the years 1950 and 2000; in 2050, the world population in India will be just over 25%, under 25% and in Japan around 21% of people, respectively.
However, India followed the opposite trend; the world population was almost 15% and just under 20% of people between 1950 and 2000, respectively and around 19% of people will be projected in China in the year 2050.
On the other hand, in the U.S.A., 10% of people were present in 1950, and the proportion of the world population remained the same between 2000 and 2050, approximately 8%. Subsequently, around 5% and nearly 5% of people were present in 1950 and 2000, while only 3% of people will be present in the year 2050; it saw the biggest drawback over the period.