According to a report released by the United Nations Department of economic and social affairs on the 17th, the world population will increase from 7.7 billion at present to 8.5 billion in 2030, 9.7 billion in 2050, and 11 billion in 2100, according to a report released by the United Nations Department of economic and social affairs. Is this true? Then, how many billion will China's population reach in 2050?
The report, entitled world population outlook 2019: summary of findings, says that from now to 2050, half of the world's new population will be concentrated in nine countries, including India, Nigeria, Pakistan, Congo (DRC), Ethiopia, Tanzania, Indonesia, Egypt and the United States. It is estimated that around 2027, India's population will surpass that of China and become the world's largest population country.
The report found that the world's population growth is slowing down, and the population of more countries is shrinking. From now to 2050, the number of countries or regions with population shrinking will increase to 55, of which 26 will shrink by more than 10%.
The global average fertility rate for women has dropped from 3.2 in 1990 to 2.5 now, according to the report. By 2050, the global average fertility rate of women will continue to drop to 2.2.
According to the report, the aging of the world population is intensifying, and the population aged 65 and above will become the fastest growing age group. At present, about 9% of the world's population is over 65 years old. By 2050, this proportion will reach 16%. By then, the population aged 65 and above in Europe and North America will account for a quarter of the total population, and the population aged 80 and above will increase from 143 million to 426 million. According to the report, the aging population leads to a decline in the proportion of people of working age, which will increase the pressure on social security.
By 2050, life expectancy will increase from 72.6 years to 77.1 years, the report said. The regional imbalance in life expectancy has improved, but at present, the average life expectancy of the population in the least developed countries is still 7.4 years shorter than the world average.