Taxes in the U.S.

Matthew Yglesias includes the following chart in his post about whether the U.S. can preserve Medicare as currently constituted:

One thing to note is that each of those other countries has some sort National Health System which covers more people than our government does.  Once you figure in the privately funded portion of our health care system, which could truly be looked at as a privately administered tax which is paid to health insurance companies, doctors, hospitals and malpractice insurance providers, we would probably move up on the list a decent amount.  Also, imagine how low our taxes could be if we didn't carry the burden of defending all these other developed world countries who spend very little on defense.