Urban Institute Research Report,  Stephen Rose, June 21, 2016 – “This report uses absolute income thresholds adjusted for inflation and family size to show that the size of the upper middle class grew from 12.9 percent of the population in 1979 to 29.4 percent in 2014. In terms of shares of total income, the middle class controlled a bit more than 46 percent of all incomes in 1979, while the upper middle class and rich controlled 30 percent. By 2014, the rich and upper middle class controlled 63 percent of all incomes, while the middle class share had shrunk to 26 percent.”