Suppose we observe the three-year Treasury security rate (₁R₃) to be 11 percent, the expected one-year rate next year E(₂r₁) to be 4 percent, and the expected one-year rate the following year E(₃r₁) to be 5 percent. If the unbiased expectations theory of the term structure of interest rates holds, what is the one-year Treasury security rate, ₁R₁?