Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Relative worth of investment versus spending for the economy 
I don't think that there's a specific  number or index that gives you what you're looking for. I think the closest thing to it would be the velocity of money, which is a measure of how often money changes hands.  Also, for what it's worth, I believe that this concept is controversial in some circles.