The bar chart depicts the change proportion of nationalities in world demographic data in 4 countries across 1950 to 2002 and the expected percentage in 2050.
Overall, India is the only nation that shows an increase in the percentage of world population and is expected to overtake China as the highest proportion in world demographic data 2050.
To begin with, Indian was accountable for less than two-fifth of the population in 1950. It rose to over two-fifth in 2002 and is expected to continously climb up to nearly one-fifth of the population, which is projected to be the largest nationalities by then.
Then, China has suffered a drastic decrease in the population from a overwhelmingly nearly 25% of the world population to nearly two-fifth in 2002 and is expected to continue the decline to exactly two-fifith of the population in 2050. Same drop is also observed for USA and Japan, where the American population dropped from more than 5% to exactly 5% in 2050 and Japnese population plummeted from slightly less than 5% to a unnoticiable 2% roughly in 2050.
