The bar chart illustrates the proportion of the population in four countries from 1950 to 2050, including actual data up to 2002 and projected figures for 2050.
It is noticeable that the population proportions of China, the USA, and Japan showed a decreasing trend from 1950 to 2002. Conversely, India experienced an upward trend during the same period. In 1950, China’s population percentage stood at 25%, which was the highest among the four countries. Meanwhile, Japan’s population proportion was only 5%, and the gap between the two countries widened considerably over this time.
According to the projections, China’s population proportion is expected to drop to 19% in 2050, and Japan’s proportion will decline to just 3%. The US, which had already seen a slight decrease by 2002, is predicted to remain stable at that level until 2050. However, India is the only country whose population percentage will continue to rise, increasing to 21% by 2050.
Overall, China and Japan are projected to see a continuous decline in their population shares over the entire period. While the US experienced a slight decrease by 2002 and is expected to remain stable after that, India’s population proportion is set to see a continuous growth and will be the highest among the four countries by 2050.