Decline of the middle class - in numbers and in income.

Shirley's recent post asked whether the middle class was declining in numbers.  Yes, it is declining in numbers and also in income.  Here are some charts.

http://www.huffingtonpost.com/2012/09/01/middle-class-america-charts_n_1847211.html#slide=1459758

"A lost decade for the middle class during which its income fell for the first time since World War II, according to a recent report from the Pew Research Center."
Here are 3 of the 5 charts in the article.  What do you think?