The combined effects of the 1993 and 2013 changes in the way the Census collected and processed data was to create the appearance of a rise in income inequality from 1947 to 2017 that was overstated by 42.1 percent—a published 22.9 percent increase versus a 16.1 percent increase in the Gini coefficients adjusted to remove the effects of the changes in methods.10 The published Gini coefficients are charted as a dashed
