Number of returns with IRA deductions and dollar amount of total and average deductions from 1980 to 2020.
Number of families and dollar amount of total and average credits from 1976 to 2020.
Number of returns claiming medical deductions and dollar amount of total and average deductions from tax years 1980 to 2020.
Number and percentage of returns classified by item with the largest and second-largest tax effect for taxable and nontaxable returns with incomes $200,000 or more.
