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. Maturity Mo/Yr Ask Yld Rate Bid Asked 103.5362 103.8235 Chg +.3204 ?? May 21 2.180 5.850 104.1762 104.3850 +.4513 ?? May 26 May 39 6.125 ?? ?? +.6821 3.870 In the above table, find the Treasury bond that matures in May 2021. What is the coupon rate for this bond? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Coupon rate %