According to a report published by the UN, at present 10 % of the world's population is aged over 60, but this figure is set to double by the middle of the century, at which time the number of people over 60 will exceed the number of children for the first time.
根據聯合國發佈的報告，當前全球人口年齡超過六十歲的比例達百分之十，到本世紀中期這個數字將倍增，屆時六十歲以上的人口數將首度凌駕孩童的人口數。