If middle-class is defined as those earning between two-thirds and twice the national median income, in 2015 the 120.8 million middle-class adults were, for the first time, exceeded by the 121.3 million lower- and upper-income adults. In 1971, 61% of adults were middle-class, in 1989 it was 59%, in 1991 it was 56%, in 2001 it was 54%, in 2011 it was 51% and today it’s just 49.9%. Troubling!