A recent edition of The Wall Street Journal reported interest rates of 2.75 percent, 3.10 percent, 3.48 percent, and 3.75 percent for 3-, 4-, 5-, and 6-year Treasury security yields, respectively. According to the unbiased expectation theory of the term structure of interest rates, what are the expected 1-year forward rates for years 4, 5, and 6