"While average effective tax rates barely changed in the US from 1945 to 2015, the average tax rates of high-income households fell sharply—from about 50 percen

"While average effective tax rates barely changed in the US from 1945 to 2015, the average tax rates of high-income households fell sharply—from about 50 percent to 25 percent for the highest income 0.01 percent and from about 40 percent to about 25 percent for the top 1 percent." https://taxpolicycenter.org/taxvox/effective-income-tax-rates-have-fallen-top-one-percent-world-war-ii-0 https://taxpolicycenter.org/taxvox/effective-income-tax-rate...