I would personally argue--and I'm sure I could make a pretty strong tax case--that it's likely not in a country's interest to have very high taxes across the board, and consider that you could maintain growth, high employment, and so forth, and have no penalty on the broader economy.
I noticed in your presentation that some countries significantly increased their value-added taxes, comparing 2005 to 2007. One of them was Italy. When Norway and Sweden increased their value-added taxes, did that result in higher personal savings? Did it result in higher employment or anything like that?