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In the contemporary world, the economic problem of population ageing caused is revealing gradually. UNESCO provides a standard that a single country or region in the population over 60 years is more than 10% of the total population, which is into the aging of the population. Both of developed and developing countries in recent years have to face more serious aging impacts for economic progress. According to population prospects (2009), the whole world will accelerate the pace of ageing after 2010. More precisely, share of elderly people is 22% in rich countries and 8% in poorer countries, whereas these figures will rise to 33% and 20%, respectively. Why does aging become a problem? The U.S. Census study points out that the worldwide ageing of the population is not the history of emerging social phenomenon. Four reasons to explain it. Basically, this demographic shift springs from advances in medical technology, education and economic growth. The Economist (2009, p.2) notes that another passing cause is the baby-boomers who are going grey after the second world war The population str…