The “Bush boom” touted by National Review Online “expert” Jerry Bowyer is kicking in:

New data shows that after adjusting for inflation, 95 percent of Americans reported smaller incomes to the tax man in 2005 than in 2000.

Despite this, all Americans had more in their pockets as a result of the Bush tax cuts, although the increases ranged from barely perceptible for the bottom half of American earners to thousands of dollars a month for those at the top, Internal Revenue Service figures show.

For the bottom half of Americans, the average after-tax income in 2005 was $14,526, which was $20 a month more than in 2000. Without the tax cuts, their incomes would have slipped by $234 a year, or around $20 a month.

The next higher 25 percent, who made $30,881 to $62,068, had on average $52 a month more after taxes in 2005. For the next 20 percent above that, the increase ranged from $144 to $274 a month.

The only group to report higher incomes both before and after taxes was the top 5 percent.

Here’s the relevant graph: