The bar chart presents data on the proportion of the total world population in four different types of specific nations, including India, China, the USA, and Japan over a period of 100 years, from 1950 to 2050.
Overall, China consistently recorded the highest number of people but decreased in later years, while Japan and the USA showed the smallest increase over the period. Meanwhile, India displayed a notable rise initially. The order of countries changes over the years based on a percentage of the population.
In 1950, China ranked first on the chart with approximately 23%, followed closely by India at 15%. By 2002, China experienced a moderate decline to 20%, whereas India saw a gradual increase, reaching just over 15% around 2002. In 2050, China will have a considerable drop to 15%, while India will increase to just under 20%.
The USA showed an increasing pattern, peaking at 5% around 2002 before climbing steadily to about 7% by estimated 2050. By 2002, Japan had risen sharply to about 3%.