世界银行的新数据表明，极端贫困人口比例在过去30年中下降了一大半，从1981年占总人口的42%下降到2010年的17 % 。
New data from the World Bank show that the proportion of extremely poor people has more than halved over the last 30 years, from 42% of the global population in 1981 to 17% in 2010.