The bar graph illustrates the proportion of the population of whole world in India, China, USA and Japan over a 50-year-period from 1950 to 2000 and also give the predictions of the next 50 years.
Overall, it can be seen that the proportion of population will be increased in India whereas it will decrease in China and Japan in the year of 2050. The population of USA will remain constant till 2050 how it was stood in the year of 2000.
Looking at the data set in more detail it is evident that, the population of whole world was stood at 15% in India in 1950. Day by day it increased and settled slightly lower than 20% in 2000. But it is predicted that, it will cross 20% in 2050. By contrast, China was nearly 26% of whole world population in 1950 which was the highest in the graph. But projections show that it will decline below 20% which is lower than India in 2050.
On the other hand, the whole world population in the USA stood at 10% in 1950 and it fell around 8% in 2000 and will remain steady till 2050. In japan, it constantly decrease and will fix nearly 3% in 2050.