The bar chart shows the percentage of the total world population in 4 countries in 1950 and 2003, and projections for 2050

The given chart illustrates the proportion of the global population in four different countries, namely India, China, the USA and Japan in the two years 1950 and 2002, and predictions for 2050.

Overall, it can be seen that while the proportion of the Indian population increases, the opposite picture is true for the other countries over the period shown, and this trend is predicted to continue in the future. Additionally, China and India have the highest proportions of the population, whereas the figures for Japan are by far lowest during the research period.

In 1950, the rate of the population in China was highest, at nearly 25%/ around 23% while figure for India was slightly lower, at 15%. At the same time, about 7% of people in the world came from the USA/America compared to only less than 5% from Japan. In 2002, the percentage of the Indian population rose gradually to approximately 17%, while China, the USA, and Japan witnessed declines in their figures respectively.

Looking into the future, India is expected to experience reaching the peak of nearly 20% of the world population and become the highest figure compared to the other countries. By contrast, decreases of 15% and about 2% are projected for the population proportions of China and Japan respectively. In the same year, the figure for the USA is anticipated to remain the same, at 5%.