The scale of the global change can be seen when purchasing power parity (PPP) – a measure of the total amount of goods and services that a dollar can buy in each country – is taken into account. According to the figures for 2011, released last year, India is now the world’s third largest economy in terms of PPP-adjusted GDP, ahead of Germany and Japan.
若将购买力平价（PPP）考虑在内，全球变化的规模更加可见一斑。根据今年早些时候发布的2011年数据，按经PPP调整的GDP衡量，印度目前已是世界第三大经济集体，超过了德国和日本。数据还表明中国将在今年某个时候超过美国成为PPP标准的世界第一大经济体——从我们的估计看，这个时候就在今年10月10日。