The graph shows Real GDP/capita and Real Disposable Income/Cap since 1950 on a log scale. (Data through 2009, from The Census Bureau. Table 678 at the link.)
I've left the 50's out of the argument, as a courtesy to Ike, since his relative performance suffers due to the post war baby boom - Ye Olde Denominator Thang.
What I want to emphasize here is the difference between the two lines. Though both have a knee, the Disposable Income break is much sharper. Here is a graph of the difference between the two, linear scale. And, BTW, this time I left the '08 and '09 data in the trend line determination.
Well - since 1980(-ish) not only has GDP growth slowed, the amount captured in disposable income has decreased, quite dramatically.
That's a whole lot of wealth that is NOT ending up in peoples' hands, wouldn't you say?
Do you have any helpful thoughts?