The last year of 70% marginal tax rates was 1981 and the top 1% paid an average of 21.9% federal income taxes.
In 2015 (last year of data) the top marginal rate was 39.6% and the top 1% paid an average of 24% in federal income taxes.
https://www.taxpolicycenter.org/statistics/historical-average-federal-tax-rates-all-households
What is your point?
That before tax cuts, the wealthy didn't pay as large a share?
So then why did you cut taxes?