Ying Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the table below. Bond 1 Coupon Rate: 8.90% 6.40 8.60 9.10 Price Quote 105.9 94.5 104.7 94.5 Maturity 3 years Face Value $ 29,000,000 6 years 49,000,000 13.5 years 54,000,000 23 years 69,000,000 If the corporate tax rate is 24 percent, what is the aftertax cost of the company's debt? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. Aftertax cost of debt 5.37%