The horizontal bar graph presents a comparative analysis of the percentage distribution of the total world population across four countries—India, China, the USA, and Japan—during the years 1950 and 2002, with projections extending to 2050.
It is evident that India and China predominantly contributed to the global population figures, whereas the USA and Japan exhibited significantly lower percentages. Notably, while China is projected to experience a considerable increase by 2050, India is anticipated to continue a downward trend.
In 1950, India accounted for approximately 19% of the world’s population, marking it as the country with the highest share among the four. However, by 2002, this percentage had declined to around 16%, with further projections suggesting a decrease to 15% by 2050. In contrast, China’s population share, starting at about 15% in 1950, saw notable growth, reaching approximately 19% by 2002. Projections indicate that China’s share will increase significantly to around 23% by 2050, solidifying its status as the leading contributor to global population figures.
The USA and Japan, on the other hand, exhibited lower population percentages throughout the observed period. The USA maintained a stable population share at nearly 5% in both 1950 and 2002, with a modest increase projected to 6% by 2050. Conversely, Japan’s population percentage grew slightly from just below 5% to around 3% across the same years, with expectations of a minor rise to approximately 4% by 2050. This demonstrates Japan’s relatively stagnant population trajectory compared to the other nations.