World Population Day is an annual event, observed on July 11

The event was established by the Governing Council of the United Nations Development Programme in 1989.

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According to the United Nations, the world population is projected to reach 9.8 billion by 2050.

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The world's population has more than doubled since 1950, when it was 2.5 billion.

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Asia is the most populous continent, with a population of 4.4 billion.

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The theme of World Population Day 2018 is "Family Planning is a Human Right".

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China has the world's largest population, with 1.4 billion people.

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The population of the United States is 323 million.

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