I still defend NASA, they have promoted some very effective reserch in aerospace and communications over the years.

(To say nothing of things like the I.V. device my sister uses that was ORIGINALLY designed to administer drugs in space - it was just what an M.S. patient needed for infusion!)
But anyway:

According to budget documents obtained from the Government Printing Office, the national budget for 2007 totals about $2.784 trillion. At $16.143 billion, spending on NASA accounts for 0.58% of this.

Compare this to NASA’s allocation during the mid-1960s when, despite the pressures of the war effort in Vietnam and President Johnson’s Great Society programs, NASA spending made up more than five percent of the federal budget.

Got the above here:
The Space Review: Putting NASA’s budget in perspective