Based on economists' forecasts and analysis, one-year Treasury bill rates and liquidity premiums for the next four years ar follows: - 1R1=5.65% - E(2rr1)=6.75% - E(31r1)=6.85% - E(4r1)=7.15% - L2=0.05% - L3=0.10% - L4=0.12% Calculate the yield to maturity for a four year bond, Round your percentage answers to two decimal places (e.g. 32.16 )