GDP would suit better than GNP for the OP's thread. And by the way, a bit outdated there.
GNP vs GDP. You are trying to deflect the point. The fact is that the difference between GDP and GNP relative to the comparison between the countrys' GDP/GNP is the important issue. My point is the median chinese income cannot afford CNC, not due to price, but due to barriers of entry. Internet access, computers, etc.
If you are pained by a 5 year old chart then at 7 to each of the bars YOY and leave the US where it is. I'm sure China's average median household income has surpassed the US.