Consider the following table for a seven-year period: Year Returns U.S. Treasury Bills Inflation 1 3.60% 1.18% 2 3.45 2.32 3 4.35 1.22 4 4.77 0.64 5 2.57 6.46 6 1.45 9.38 7 1.18 1.33 What was the average real return for Treasury bills for this time period? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.