It is manifest from the presents to changes in the rate of population in India,China, the USA and Japan in 1950 and 2000, and also indicates the projections for 2050.
Overall, a brief analysis reveals that China had the highest figure whereas India, the USA and the Japan had second third and fourth position respectively over the shown time. But estimates show that India will take the lead by 2050.
To begin with, China shows that there was significant change during the period from just over 25% in 1950 to Slowly dropped over 24% in 2000. Nevertheless, the figure will decreased and would reach approximately 19% in 2050.
On the other hand, the population in India in 1950 was 15% and the figure increased slightly to around 19% in 2000. However, the proportion will increased slowly over 2% by 2050. Furthermore, the USA and Japan was same position during the period from 10% and 5% in 1950 and less than 10% and 5% in 2000, moreover, the figure will leveled off same as 2000 to 2050 and Japan had will fall down the population in 2050.
