You find the following Treasury bond quotes. To calculate the number of years until maturity, assume that it is currently May 2019 and the bond has a par value of $1,000. In the above table, find the Treasury bond that matures in May 2031. What is your yleld to maturity if you buy this bond? (Do not round intermedlate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)