population muslim global factors countries life developed expectancy growth birth people future absolute
population growing stop 2100 world projected nearly century end pew expected latin populations declining europe both america
fertility 2100 projected nearly pew births trend billion declining takeaways prospects falling aging pewresearch
population growth factors impact ppt powerpoint presentation skip video
population growth immigration 2035 immigrants immigrant projected drive through important very least working age economy boost generation jobsanger report boom
population 2050 projections world global projected age years than five center pew faster graying pewresearch pg