You are right. But, what I am concerning

is how to measure economic scale of a nation. For intance, China has less than 20% population of the world, but has consumed ~50% raw materials and minerls, and produced over 50% goods. In this regards, I think China's real economic scale must be much bigger than what it is currently based on GDP. In fact, China real GDP could be 2 to 3 times bigger than the States last year.