Consider the following table for a seven-year period:

	Returns
Year	U.S. Treasury Bills		Inflation
1	4.15	%	1.29	%
2	4.00		2.43
3	4.90		1.33
4	5.32		.75
5	3.12		6.57
6	2.00		9.49
7	1.73		1.44

What was the average real return for Treasury bills for this time period? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Average real return %