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 Rate Bid Asked 103.5449 103.6327 Ask Yld ?? Chg +.3287 May 28 2.309 6.202 May 33 ?? 104.4939 104.6396 +.4281 +.5392 ?? ?? 6.158 May 43 4.011 In the above table, find the Treasury bond that matures in May 2028. 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 %