I'm not sure that civil-service headcount will give you a good indication of how much of the government is operational. At NASA, IIRC only ~ 20% of the funds g

I'm not sure that civil-service headcount will give you a good indication of how much of the government is operational. At NASA, IIRC only ~ 20% of the funds go to civil servant salaries. The rest goes out the door in contracts, grants, etc. I don't know the fractions for other agencies.