population world projection un people projections growth global earth years nations united future billion will prediction gdp many year data
un population world report billion 2100 reach nearly peak pace expected 2050 slower growing could around nations united
population 2100 world countries country infographic global will populations visualcapitalist largest india share peak china visualistan estimates visualizing graphic infographics
population projections world iiasa probabilistic global un figures maps 1g eps eea europa eu data pop century
population growth world rate annual 1950 natural 2100 data our