In 2014, global output per head grew by close to 2 per cent, at purchasing power parity. Thus, at the end of the year, human beings were, on average, better off than ever before in their long history. This is also likely to be true at the end of 2015. Optimism is sensible.
2014年,以购买力平价计算,manbetx app苹果 人均产出增长了近2%。也就是说,到2014年底,平均而言人们的生活水平比人类漫长历史上的任何时期都要高。到了2015年底,情况恐怕也会如此。保持乐观是有道理的。
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