Over the next 47 years the world population is expected to grow by another 2.6 billion and by 2050 would reach 8.9 billion. At the same time, the authors of the report think that the materialization of these forecasts depends largely on the accessibility of family planning methods and successful prevention of the spread of HIV/AIDS.
According to UN forecasts, the highest population growth is expected in the 50 least developed countries. As for industrially developed countries, the birth rate there, on the contrary, would continue to fall. Out of the 21 countries jointly accounting for 75% of the current world population growth, only one, the USA, is a developed country. However, almost half of that country's population are immigrants.
By 2050 India may replace China as the most populated country in the world. India's population would grow by more than 500 million people. India would be followed Pakistan, Nigeria, USA and China, with population growth of up to 150 million people.
As for Russia, its population is expected to drop over the same period by 44 million people. Serious demographic losses have also been forecast for Ukraine, Japan and Italy, where the population would drop by 18, 17 and 13 million people respectively.
"For developing countries, the most serious problem in the field of demography is the high mortality rate. The major demographic problem for developed countries is the low birth rate and its consequences, in particular the aging of the population and the shrinkage of the able-bodied population share", the report says.