Ying Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the table below. Price Quote Bond 1 2 3 4 Coupon Rate 8.90% 7.10 8.60 9.10 106.9 93.5 105.7 95.5 Maturity 3 years Face Value $ 28,000,000 6 years 13.5 years 23 years 30,000,000 35,000,000 50,000,000 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 %