I have also found this. It is a little older, but as you can see, our average Joe is not making much more than he was in the 70's.
"Most ordinary Americans have suffered stagnant or declining
incomes and wages for at least two decades. In 1972, the U.S.
median family income was $38,760 in 1993 dollars. In 1992, the
median family income had slipped to $38,266 in 1993 dollars. The
U.S. median individual income has fallen from the 1968 level of
$15,782 in 1993 dollars, to the 1992 level of $15,629 in 1993
dollars. The average hourly wage for a production and non-
supervisory worker in 1973 was $11.37 in 1991 dollars. By 1991,
the average hourly wage had fallen to $10.34 per hour in 1991
dollars. For males, in 1963, the median income was $21,492 in
1993 dollars. In 1993, median male income had dropped to $21,470
in 1993 dollars. There has been no growth in median male income
in the last 30 years, making this the first generation of sons in
the history of America who earn less than their fathers did."
"Most ordinary Americans have suffered stagnant or declining
incomes and wages for at least two decades. In 1972, the U.S.
median family income was $38,760 in 1993 dollars. In 1992, the
median family income had slipped to $38,266 in 1993 dollars. The
U.S. median individual income has fallen from the 1968 level of
$15,782 in 1993 dollars, to the 1992 level of $15,629 in 1993
dollars. The average hourly wage for a production and non-
supervisory worker in 1973 was $11.37 in 1991 dollars. By 1991,
the average hourly wage had fallen to $10.34 per hour in 1991
dollars. For males, in 1963, the median income was $21,492 in
1993 dollars. In 1993, median male income had dropped to $21,470
in 1993 dollars. There has been no growth in median male income
in the last 30 years, making this the first generation of sons in
the history of America who earn less than their fathers did."