It would be interesting to see what percent of increments to GDP over these years is accounted for by investment and government spending -- taxes.
Maybe some of you know this story: James Tobin was approached by JFK in 1959, and was asked which end was up on the economic front. Tobin explained that if you take all increments of GDP in the 1950s, a great majority went to consumption, a lot went to G-T, for a total of c. 115 percent! Investment was less than it was, in the aggregate, than at the start of the decade, i.e., increments to investment were negative. Thus the neo-keynesianism of JFK whose tax and other politics stressed raising aggregate demand, but I much more than C. Jim O'Connor