Suppose we observe the three-year Treasury security rate (1R3) to be 5.3 percent, the expected one-year rate next yeat- f(2r1)-ta be 5.8 percent, and the expected one-year rate the following year F(3r1) to be 6.2 percent. If the unbiased expectations theory of the term structure of interest rates holds, what is the one-year Treasury security rate? (Do not round intermediate calculotions. Pound your percentage answer to 2 decimal places. (e.9. 32.16))