Suppose we have the following Treasury bill returns and inflation rates over an eight year period:

Year	Treasury Bills	Inflation
1	8.11%	9.83%
2	8.92	13.36
3	6.74	7.87
4	5.88	5.61
5	6.32	7.63
6	8.57	10.01
7	11.55	14.32
8	13.21	13.77
Calculate the standard deviation of Treasury bill returns and inflation over this period. (Do not round intermediate calculations and round your final answers to 2 decimal places. (e.g., 32.16))