Doesn't the census run just once per decade — i.e. 1980, 1990, 2000, 2010? The above table has claimed data from 2005, when the census didn't run. The Department of Labor and other agencies collect income and employment statistics more often, though.
The Census Bureau has projects that they do between decades, even though "The" Census is only every decade.
ETA: The table linked by Landsburg has been called into serious question by Evan Soltas [H.T. CronoDAS]. I edited the post to leave only the table to provide context for the comment discussion of its status.
Economist Steve Landsburg has a post [H.T. David Henderson] about the supposed stagnation of median wages in the United States in recent decades. In the linked table median wages have risen for: