RAK Co. wants to issue new 19-year bonds for some much-needed expansion projects. The company currently has 10 percent coupon bonds on the market that sell for $1,050, have a par value of $1,000, make semiannual payments, and mature in 19 years. What coupon rate should the company set on its new bonds if it wants them to sell at par? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)