Global Population Estimates by Age, 1950-2050 http://www.pewglobal.org/2014/01/30/global-population/ Global Population Estimates by Age, 1950-2050 Pew Research Center 2014 ref "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 expected to tilt strongly to the oldest age groups expected to tilt strongly to the oldest age groups "Global Population Estimates by Age, 1950–2050" http://www.pewglobal.org/2014/01/30/global-population/ Pew Research Center the demographics of the United States Global Population Estimates by Age, 1950-2050 Pew Research Center "Global Population Estimates by Age, 1950–2050" http://www.pewglobal.org/2014/01/30/global-population/ expected to tilt strongly to the oldest age groups Global population estimates, 1950-2050 "Global Population Estimates by Age, 1950–2050" http://www.pewglobal.org/2014/01/30/global-population/ Global Population Estimates by Age, 1950-2050 Global Population Estimates by Age, 1950-2050 interactieve versie: Global Population Estimates by Age, 1950-2050 Global Population Estimates by Age, 1950-2050