Between 1946 and 1963 the top tax rate was 91% and the unemployment rate averaged 4.6% per year.
Between 1965 and 1981 when the
top tax rate was lower (70%) the average unemployment rate was higher (5.7% per year).
Between 2003 and 2012 the
top tax rate was much lower (35%) and the average unemployment rate was even higher (6.8% per year).
See for yourself (below).
Source: The Tax Foundation; National Bureau of Economic Research;
and the US Bureau of Labor Statistics