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	8.70	%	106.2	7	years	$	21,000,000
2	6.70		94.2	10	years		37,000,000
3	8.40		105.0	17.5	years		42,000,000
4	8.90		94.8	27	years		57,000,000

If the corporate tax rate is 38 percent, what is the aftertax cost of the companys 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