Based on economists' forecasts and analysis, one-year Treasury bill rates and liquidity premiums for the next four years are expected to be as follows: 1R1=0.50% E(2r1)=0.968L2=0.048 E(3r1)=1.06%L3=0.13% E(4r1)=1.36%L4=0.14% Calculate the yield to maturity for four years. (Round your percentage answers to 2 decimal places. (e.g., 32.16))