World Population Prospects: 2006 Revision Database; World Population Continues Path Towards Population Ageing, On Track To Surpass 9 Billion Persons By 2050
The world population continues its path towards population ageing and is on track to surpass 9 billion persons by 2050, as revealed by the newly released 2006 Revision of the official United Nations population estimates and projections.
The results of the 2006 Revision -- which provide the population basis for the assessment of trends at the global, regional and national levels, and serve as input for calculating many key indicators in the United Nations system -- incorporate the findings of the most recent national population censuses and of the numerous specialized population surveys carried out around the world.
According to the 2006 Revision, the world population will likely increase by 2.5 billion over the next 43 years, passing from the current 6.7 billion to 9.2 billion in 2050. This increase is equivalent to the total size of the world population in 1950, and it will be absorbed mostly by the less developed regions, whose population is projected to rise from 5.4 billion in 2007 to 7.9 billion in 2050. In contrast, the population of the more developed regions is expected to remain largely unchanged at 1.2 billion, and would have declined, were it not for the projected net migration from developing to developed countries, which is expected to average 2.3 million persons annually.
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