Suppose that the current one-year rate (one-year spot rate) and expected one-year T-bill rates over the following 3 years (i.e., years 2, 3 and 4 respectively) are as follows:1R1= 6%, E(2r1) = 7%, E(3r1) = 7.5% E(4r1) = 7.85%Using the unbiased expectations theory, calculate the current (long-term) rates for three-year- and four-year-maturity Treasury securities.

One year = ? %

Two year = ? %

Three years = ? %

Four years = ? %