The graph below gives historical information and projections about changes in population in the United States, Nigeria and Japan.

The given line graph illustrates the history and the projection of population numbers for 100 years from 1950 to 2050 in the United States,

Nigeria

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, and Japan. Units are measured in millions.

Overall

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, it can clearly be seen that all of the countries rose throughout the given period.

Moreover

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,

Nigeria

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had the lowest

number

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of residents in history but was predicted to be the biggest population. In terms of the country with the highest figure at the start, the United States stood at just below 200 in 1950. The

number

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then

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experienced a gradual increase over 100 years and reached a peak at around 430 in 2050. Regarding other countries with lower numbers,

Nigeria

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and Japan started at around 80 and at precisely 100, respectively. The

number

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of citizens in Japan increased slightly until 2020 at approximately 120 before it witnessed a steady fall to 105 by the end of time.

In contrast

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, the

number

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in

Nigeria

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climbed steeply and surpassed

Nigeria

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in 2000, and the projection it will exceed the United States in 2040. The figure

then

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peaked at exactly 600 in 2050.