Data on the gross domestic product of any country is largely an illusion. In order to see the real situation, we must look at least two things: the gross domestic product and the purchasing power parity. The purchasing power parity gives an opportunity to estimate the real volume of the economy without reference to the dollar exchange rate, as well as the real standard of living in the country.

任何一个国家的国内生产总值数据某种程度上来说都是一种假象。为了看清楚这个问题,我们必须注意两个指标。一个是国内生产总值,另外一个是购买力平价。购买力平价指数可以让我们在不考虑美元汇率的情况下,真实的反映当地的生活水平。从而能够以此来更好的估计当地的经济规模。