Consider the following table for a seven-year period:

	Returns
Year	U.S. Treasury Bills		Inflation
1	4.25	%	1.31	%
2	4.10		2.45
3	5.00		1.35
4	5.42		.77
5	3.22		6.59
6	2.10		9.51
7	1.83		1.46

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.)