Here, using data through September 2018. I will tantalize you with a few tid-bits:
(Note: The first, and brief, post-war cycle is omitted.)
The Rahn Curve depicts the relationship between government spending, as a share of the economy, and the rate of growth. My analysis, which takes into account more than government spending, yields this result:
For a full explanation, go to III. The Rahn Curve in Action.