Ying Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the table below. Bond Coupon Rate Price Quote Maturity Face Value 1 8.60% 105.6 6 years $26,000,000 2 6.80 94.8 9 years 46,000,000 3 8.30 104.4 16.5 years 51,000,000 4 8.80 106.3 26 years 66,000,000 NM If the corporate tax rate is 21 percent, what is the aftertax cost of the company's debt? (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 5.65 %