Specifically (figure 1) https://www.cbpp.org/charts/income-gains-widely-shared-in-early-postwar-decades-but-not-since-then-4
Link: https://www.cbpp.org/research/poverty-and-inequality/a-guide-to-statistics-on-historical-trends-in-income-inequality](https://www.cbpp.org/research/poverty-and-inequality/a-guide-to-statistics-on-historical-trends-in-income-inequality