联合国人口司

据联合国人口司（UNPopulationDivision）及高盛集团（GoldmanSachs）预测，在一代人时间内，中国中产阶级将大约是美国中产阶级人口规模的4倍。

Within a generation , the middle class in China will be roughly four times the size of the American middle class population , according to the UN Population Division and Goldman Sachs .

避免人口下降所需要的出生率的计算，来源于联合国人口司（UNPopulationDivision）的“即时替换计算”，不仅包含出生率，也包含孕产妇死亡率。

The calculation of the number of births needed to stop population from falling is derived from the UN Population Division 's " instant-replacement calculation , " which takes account not only of the rate of births but also maternal deaths .

这幅地图根据联合国人口司最新数据，显示了世界上最拥挤和最不拥挤的国家。

Those most - and least - crowded countries are shown here , based on the latest available figures from the UN Population Division .