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.

Company (Ticker)	Coupon	Maturity	Last Price	Last Yield	Estimated $ Volume (000s)
Xenon, Incorporated (XIC)	6.300	January 15, 2043	94.291	??question mark	57,371
Kenny Corporation (KCC)	7.210	January 15, 2037	??question mark	6.20	48,950
Williams Company (WICO)	??question mark	January 15, 2039	94.825	7.02	43,811

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., 32.16.