The World at 7 billion
World population will reach 7 billion in October 2011 and 10 billion by 2100. These are the latest projections from the UN after a major review of its population projections. More accurate data at country level has come from recent censuses in China and India. India is projected to soon overhaul China in total population and by 2100 is projected to increase to 1.55bn (up 0.33bn) while China falls to 0.94bn (down by 0.4bn).
Dramatic changes are projected in Africa due to higher life expectancy from moderation in AIDS impact and continued relatively high fertility. Nigeria and Tanzania are projected to total 1bn by 2100 while Rwanda’s population will rise four fold giving it a land based density five times that of Japan.
Average world life expectancy is projected to increase by 13 years from 68 years in 2010 to 81 in 2100. In current high fertility/high mortality countries life expectancy is forecast to increase by 21 years from 56 to 77.
Posted Wednesday, 18 May 2011
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