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China and India currently account for about 37 percent of the world's total population of about 7.7 billion people, China of about 1.4 billion and India of 1.3 billion.
But by 2027, India will have more inhabitants than China, according to the report released Monday by the United Nations on the population outlook for 2019, and by 2050, the gap should further widen.
"Between 2019 and 2050, 55 countries or regions are expected to see their population decrease by at least 1%," the report says, mainly due to low fertility levels and in some cases a high number d & # 39; emigration.
"In the biggest of them, China, the population is expected to decrease by 31.4 million, or 2.2%".
This would put the Chinese population at 1.1 billion inhabitants, less than the 1.5 billion forecast for India.
According to the report, the report predicts that by 2050, the total population of the planet will reach 9.7 billion inhabitants, representing a staggering increase in just one century.
Five years after the founding of the UN in 1950, the world's population represented only 2.6 billion people.
The United Nations compiles the report using demographic trends and relevant trends in human fertility, mortality and migration. The objective is to provide information to governments in the context of achieving the 2030 Sustainable Development Goals of the United Nations.
Besides India in front of China, the UN report says Nigeria will be the third most populous country by 2050 with about 733 million inhabitants, surpassing the United States, which will fall to fourth with a population of 434 million. Pakistan will remain the fifth largest country in the world in terms of population.
"Most of the fastest growing populations are in the poorest countries, where demographic growth poses additional challenges," said Liu Zhenmin, UN Under-Secretary-General for Economic and Social Affairs (DESA), in a statement.
According to the report, more than half of the world's population by 2050 will be clustered in only nine countries: the United States, India, Nigeria, Pakistan, the Democratic Republic of Congo, Ethiopia, Tanzania, Indonesia and Egypt.
Major global trends include a declining population, an unprecedented scale, an aging population due to rising life expectancy and a small gap between rich and poor countries.
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