I only disagree with the estimate of the beginning of the trend. It looks more like the real break happened right about the time Reagan fired the air traffic controllers. (h/t KDrum) --SS
Is decoupling real? « Consider the Evidence:
"Since the 1970s, income growth for middle-class American households has become decoupled from growth of the economy. The chart below offers one way to see this. It shows trends in GDP per capita and median family income, with each series displayed as an index set to equal 1 in the initial year. From the late 1940s through the mid-to-late 1970s, the two moved in lockstep. After that, GDP per capita continued its steady upward march (through 2007), but median income rose much less rapidly."