Suppose we observe the 3-year Treasury security rate (1R3) to be 5 percent, the expected 1-year rate next year- E(2r1) to be 5 percent, and the expected 1 -year rate the following year- E(3r1)-to be 3 percent. If the unbiased expectations theory of the term structure of interest rates holds, what is the 1-year Treasury security rate, 1R1 ? Note: Round your percentage answer to 2 decimal places (i.e., 0.1234 should be entered as 12.34)