The bar chart illustrates how the proportion of individuals in 4 countries changed in 1950 and 2002, and predicted figures for 2050.
Overall, there was a decrease in the proportion of the total world population in China, the USA, Japan, while a gradual increase was seen in India. In addition, China generally had the highest figures among the 4 countries, but it will be surpassed by India in the figure for 2050.
The percentage of people living in the USA in 1950 started at around 7%, after which it experienced a slight decline to exactly 5% in 2002, before ending the period with a leveling off at 5% in 2050. Similarly, the figure for Japan declined slowly from just under 4% in 1950 to around 3% in 2002, and later will be predicted to drop to upward of 1% in 2050.
About 20.5% of civilians living in China in 1950, with a subsequent decrease to precisely 20% in 2002 and a final significant drop to 15% in 2050. Opposite changes can be seen in the figure for India, which was at 15% in 1950, followed by a slight growth to just under 17% in 2002 and a final increase to downward of 19% in 2050.