1% of the economy
Interestingly, the Federal Budget has been floating fairly steadily at around 20 percent of the GDP since about the 1950s. Many liberals cling to this number to show that our budget is not growing so fast after all.
This of course presupposes that massive economic growth increases the need for government spending on human needs, when common sense dictates that it really ought to be the other way around.
In point of fact, in CONSTANT DOLLARS, our budget is currently about five times what it was in 1950.