Suppose that the current one-year rate and expected one-year T-bill rates over the following three years (i.e., years 2, 3, and 4, respectively) are as follows: 1R1 = 2.41%, E(2rl)=2.77%, E(3rl) = 4.47%, E(4r1) = 5.34% Using the unbiased expectations theory, calculate the current rate for three-year- maturity Treasury securities