Ying Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the following table.

Bond Coupon Rate Price Quote Maturity Face Value

$14\mathrm{.}00\%103\mathrm{.}185$ years $ $45,000,000$

$26\mathrm{.}10112\mathrm{.}808$ years $40,000,000$

$35\mathrm{.}30107\mathrm{.}4515\mathrm{.}5$ years $50,000,000$

$44\mathrm{.}90102\mathrm{.}7525$ years $65,000,000$

If the corporate tax rate is $22$ 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$.,32\mathrm{.}16.)$