nope
Their effective tax rates have dropped
You're mistaking total revenue for revenue earned from top tax earners, you're going by this graph:

This just means that lower brackets are shouldering more burden then they did in the past, total revenue is earned from everyone, not just the top earners, and in the past the top earners covered more of the burden, now its fallling more heavily on lower brackets as the effective tax rates of the rich have fallen
Predictions:Sales of Wii Fit will surpass the combined sales of the Grand Theft Auto franchiseLifetime sales of Wii will surpass the combined sales of the entire Playstation family of consoles by 12/31/2015 Wii hardware sales will surpass the total hardware sales of the PS2 by 12/31/2010 Wii will have 50% marketshare or more by the end of 2008 (I was wrong!! It was a little over 48% only)Wii will surpass 45 Million in lifetime sales by the end of 2008 (I was wrong!! Nintendo Financials showed it fell slightly short of 45 million shipped by end of 2008)Wii will surpass 80 Million in lifetime sales by the end of 2009 (I was wrong!! Wii didn't even get to 70 Million)







