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The Ageing of Europe, also known as the greying of Europe, is a demographic phenomenon in Europe characterised by a decrease in fertility, a decrease in mortality rate, and a higher life expectancy among European populations. ==Overall trends== Giuseppe Carone and Declan Costello of the International Monetary Fund projected in September 2006 that the ratio of retirees to workers in Europe will double to 0.54 by 2050 (from four workers per retiree to two workers per retiree).〔〔(【引用サイトリンク】title=Europe's Aging Population Faces Social Problems Similar to Japan's )〕 William H. Frey, an analyst for the Brookings Institution think tank, predicts the median age in Europe will increase from 37.7 years old in 2003 to 52.3 years old by 2050 while the median age of Americans will rise to only 35.4 years old. The Organisation for Economic Co-operation and Development estimates only 39% of Europeans between the ages of 55 to 65 work. If Frey's prediction for Europe's rising median age is correct, Europe's economic output could radically decrease over the next four decades.〔 〕 Austria's Social Affairs Minister said in 2006 that, by 2010, the 55- to 64-year-old age bracket in the European Union would be larger than the 15- to 24-year-old bracket. The Economic Policy Committee and the European Commission issued a report in 2006 estimating the working age population in the EU will decrease by 48 million, a 16% reduction, between 2010 and 2050, while the elderly population will increase by 58 million, a gain of 77%. The U.S. Census Bureau estimates the European Union will experience a 14% decrease in its workforce and a 7% decrease in its consumer populations by 2030. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ageing of Europe」の詳細全文を読む スポンサード リンク
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