Like all good conservatives, he seems to think that the fact that Bush also significantly increased federal spending, thus stimulating the economy, is a fact better left unmentioned and unrecognized. In fact, he called bringing up the increased spending and the stimulus effect of it "twisting the logic."
So, I charted
Through the Clinton years, revenues as a percent of GDP grew at a stead.
Of course, when Bush cut taxes, the revenues as a percent of GDP dropped.
If you assume revenue growth would have pretty much continued on the Clinton era path (as projected with the green line in the graph) you can see just how much revenue we lost because of the Bush tax cuts.
 On edit, per correction in first comment made.