Take the developed nations--in Sweden the elderly are 18 % of the total, have surpassed 15 % in the U.K. and Germany, and in Japan, with the longest average life expectancy, they are 11 %.
以歐美先進國家來說，瑞典老年人口已直逼總人口的百分之十八，英國和西德早就超過百分之十五，平均壽命最長的日本也已達百分之十一。