You find the following corporate bond quotes. To calculate the number of years until maturity, assume that it is currently January $15,2022.$ The bonds have a par value of $$2,000$ and semiannual coupons.

$\backslash$table$[[$Company $($Ticker$),$Coupon,Maturity,Last Price,Last Yield,$\backslash$table$[[$Estimated$],[$$ Volume$],[(000$s$)]]],[$Xenon$,$ Incorporated $($XIC$),6\mathrm{.}800,$January $15,2043,94\mathrm{.}351,??,57,376],[$Kenny Corporation $($KCC$),7\mathrm{.}260,$January $15,2037,??,\backslash$table$[[6\mathrm{.}30],[7\mathrm{.}12]],48,955],[$Williams Company $($WICO$),??,$January $15,2039,,,]]$

What is the coupon rate for the Williams Company bond?

Note: Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

Coupon rate