Aging around the world

  Asia and Europe are the two regions where a significant number of countries face population ageing. Within twenty years, many countries in these regions will face a situation where the largest population cohort will be those over 65 and average age approach 50 years old. And nowadays most of the developed countries  have sub-replacement fertility levels, and population growth now depends largely on immigration together with population momentum, which arises from previous large generations now enjoying longer life expectancy.