Consider the following table for a seven-year period:

		Returns
Year	U.S. Treasury Bills			Inflation
1		3.75	%	1.21	%
2		3.60		2.35
3		4.50		1.25
4		4.92		0.67
5		2.72		6.49
6		1.60		9.41
7		1.33		1.36

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.)