http://www.pewglobal.org/2014/01/30/global-population/ Global Population Estimates by Age, 1950-2050 Global Population Estimates by Age, 1950–2050 Global Population Estimates by Age, 1950-2050 "Global Population Estimates by Age, 1950–2050" Global Population Estimates by Age, 1950-2050 "Global Population Estimates by Age, 1950–2050" "Global Population Estimates by Age, 1950–2050" Global Population Estimates by Age, 1950–2050 Growth from 1950 to 2010 was rapid is forecast "Global Population Estimates by Age, 1950–2050" is forecast "Global Population Estimates by Age, 1950–2050" Pew Research Center http://www.pewglobal.org/2014/01/30/global-population/ Global Population Estimates by Age, 1950-2050