Enough time has now passed that it's possible to take a look at the effect of these tax cuts on government revenues. The growth of receipts by source, outlays, and GDP over every 8-year period since 1940 is shown in the following graph:

The actual numbers and sources can be found at recgro8y.html. As can be seen in the graph and second table, real (corrected for inflation) individual income tax receipts declined 25.06% from 2001 to 2009. Even real total receipts declined 13.93% over that period. Finally, real GDP grew just 13.36% from 2001 to 2009. This was the lowest real GDP growth over any 8-year span since 13.33% from 1966 to 1976. Hence, although it's been just about eight years since the 2001 tax cut and six years since the 2003 tax cut, the evidence to this point is that the Bush tax cuts decreased revenues over what they would have been, at least over the short term. This was true even in my prior analysis based on data through 2007, before the financial crisis of 2008.