In 2011 the average local and cantonal tax rate on a married resident of Münchenwiler making 150,000 Swiss franc was 12.2%, while an unmarried residents rate was 17.9%.  For comparison, the average rate for the entire canton in 2006 was 13.9% and the nationwide rate was 11.6%.  In 2009 there were a total of 197 tax payers in the municipality.  Of that total, 58 made over 75,000 CHF per year.  There were 2 people who made between 15,000 and 20,000 per year.  The average income of the over 75,000 CHF group in Münchenwiler was 109,931 CHF, while the average across all of Switzerland was 130,478 CHF.. How many more people made over 75,000 CHF per year compared to those who made between 15,000  and 20,000 per year?