China, the most populous nation, became a country with the largest number of aged population at the turn of the century. The aged in China covers one fifth of those in the world.
世纪之交,我国已经悄悄的步入了人口老龄化国家的行列,中国不仅成为世界上人口数量最多的国家,也是老年人口数量最多的国家,占全球老年人口总量的五分之一。
参考来源 - 中国农村人口老龄化问题及对策研究（研究生论文）