The given bar chart provides a breakdown of the global population in four countries between 1950 and 2000, with projections till 2050. As reflected by the y-axis, the scale is measured from 0% to 30%, with the intervals of 5%.
Overall, the percentage of the world population in India consistently increased while the figure for other three countries decreased gradually in the whole period. Remarkably, China’s population was the highest among that of India, the United States and Japan, consituating over 25 percent of the global population.
In 1950, the proportion of the world population in India started at 15%, followed by a moderate growth to around 18% in 50 years later. It is estimated that the figure for the population in that country will keep rising up to over 20% in 2050. Conversely, the rate of international population in China showed a drop by 3% in 2000 from 27% in the past 5 decades.
In 2000, the percentage of population in the USA decreased by 2% compared to 10% in 1950 and will level off in 2050. Japan, similarly, although the population rate had minor fluctuation, the overall trend was downward, which is expected to plunge to 3% in 2050.