The bar chart illustrates how the proportion of individuals in four countries changed in 1950 and 2002, and the predicted figures for 2050.
Overall, there was a decrease in the proportion of individuals in China, the USA, and Japan, while a gradual increase was seen in India. Additionally, China generally had the highest figures among the four countries, but it is expected to be surpassed by India by 2050.
The percentage of people living in China started at around 23% in 1950, after which it experienced a slight decrease to exactly 20% in 2002. Similar changes, but to a lesser extent, were seen in the USA and Japan, which declined from just under 7% to 5% and from 4% to almost 3%, respectively. Meanwhile, the figure for India increased slowly from 15% to approximately 17% over the same period.
Looking ahead to 2050, it is predicted that about 5% and 2% of civilians living in China and Japan will decrease respectively, while the figure for the USA will level off. Meanwhile, the percentage of people living in India will increase by 2% in 2050.
