http://www.taxfoundation.org/news/show/250.html
In spite of this, most of the services they paid for are not the public goods (e.g., roads, power, water, police) you describe. Of the top 5 biggest expenditures in the US, only the 4'th is a public good.
http://www.usgovernmentspending.com/year2008_US.html
And this completely ignores all the consumer surplus they have created (i.e., the happiness you get from using a macbook rather than having $1000). The elites have paid their debt. Let them leave if they want to.
The US should not become a prison state.
They've probably used more than 60%. Almost all of the money is a means to keep poor people "content" in this country. It's a small price that rich people pay. To put it another way, rich people could certainly cut off pretty much all education, pension, health care expenditures if they wanted to. But there's a reason they don't, and its not because they're nice people. But its in their best interest. It's their public good.
Secondly, most government spending does not provide those necessary services. Roads, police and water are just not very expensive. Most government spending is just transfers from the wealthy to the less wealthy - see my second link in my previous post.
[1] Actually, my landlord pays for police protection, and has raised my rent commensurately.
[1]From other IRS data, we can see that in 2008, around 52 million tax returns were filed with either positive or negative AGI that used exemptions, deductions and tax credits to completely wipe out their federal income tax liability. Not only did they get back every dollar that the federal government withheld from their paychecks during 2008, but some even received more back from the IRS.