The graph compares changes in the percentage of the world population in four countries—India, China, the USA, and Japan—from 1950 to 2002 and provides projections for 2050.
Overall,China,Usa and Japan followed decreasing trends,while India is the only one that showed an increasing.
China accounted for nearly 23% of the global population in 1950, experiencing a slight decline to about 20% by 2002, and is forecasted to decrease further to around 15% by 2050.On the other hand,India followed an increase over the years.India had a population share of 15% in 1950, which grew to 17.6% in 2002, and is projected to continue rising in the future.
In the earliest period, the population in the USA didn’t reach 10% of the global population, and it decreased to only 5% in 2002. Moreover, it is forecasted to remain stable in 2050. Japan was the country with the lowest rate of people, accounting for 3% in 1950, declining subtly in 2002, and it is expected to hit the bottom with no more than 2% population globally in 2050.
