The chart illustrates how the population in the United States, Nigeria and Japan changed from 1950 to 2000 and was expected to be between 2000 and 2050.
Overall, the proportion of inhabitants in the United States and Nigeria were predicted to increase sharply by the year of 2050, while that of Japan followed to a lesser extent.
The number of Nigerian residents started at the lowest at about fifty millions in 1950, but it rose dramatically to nearly one hundred fifty millions in 2000. A somewhat similar trend can also be seen in the figure for American people. That of the United States had the highest population at nearly two hundreds millions in 1950 before experiencing a significant jump to over three hundreds millions in 2000. That of Japan also grew, but to a lesser extent. A slight upturn was witnessed in the Japanese population from one hundred millions in 1950 to one hundred fifty in 2000.
From 2000 to 2050, the number of Nigerian citizens was projected to go up to six hundreds millions in 2050 and surpass other nations. The United States resident population also was anticipated to undergo a noticeable growth to nearly four hundreds fifty millions in 2050. The demographic size of Japanese people was forecasted to adopt an opposite trend. There can be a marginal drop in that of Japanese to about one hundred twenty in 2050.
