Africa's population growth figures are staggering. The continent had a fertility rate of 5.4 children per woman during the 2005-10 period - double that of any other region - and it is projected to decline only to 3.2 by 2050, still higher than other regions (the rate is under 2.5 in Asia, and below 2 in East Asia).
That will more than double Africa's current population of 1 billion to 2.1 billion by 2050, and quadruple it to 3.9 billion by 2100, according to the population division of the United Nations Department of Economic and Social Affairs. Half of projected population growth from 2012-2050 will be in sub-Saharan Africa.
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