Middle Class Wages

So I'm reading this story about middle class wages on an MSNBC online, here:
http://www.msnbc.msn.com/id/21272238/
The story is part of a series MSNBC has been doing on the struggles of the middle class. But in the middle of the story there is this attempt to show that the middle class is doing far better than they were 60 years ago:

"Census data show that the median income has risen steadily, with temporary setbacks, over the past 60 years as "the real reward for an hour of work has more than tripled," according to a February speech by Federal Reserve Chairman Ben Bernanke. In 1947, median family income, in 2004 dollars, stood at just $22,500, according to the Census. By 1973, that figure had doubled, and continued to rise to $57,500 by the year 2000."


This sounds great, right? Well not so great when you start to analyze what is being said.
Once you scratch the surface you realize that this is actually evidence of stagnating wages for the middle class. In the 26 years from 1947 to 1973 the median wage doubles from $22,500 to $45,000, a 100% increase or an annual increase of 2.78%. However, in the 27 years from 1973 to 2000 the median wage increases only $12,500 from $45,000 to $57,500, an increase of 28% or annual increase of less than 1%, around .7%. So in the 27 years from 1973 to 2000, the median wage as a whole has only slightly outpaced inflation.

I wonder how we've done since Bush took office?