Thanks, Chris. I had no idea where to start researching. Google turns
up a number of sites that are confusing and inconsistent (and even the
BEA site is confusing) But according to BEA at:
during the same year you mentioned, 2008, the Federal government spent
3.1176 trillion dollars.
So from this tiny sample (and other years shown on the same sie), it
looks like the US Federal government spends a third more than the
states and cities.