You find the following corporate bond quotes. To calculate the number of years until maturity, assume that it is currently January 15, 2019. The bonds have a par value of $2,000 and semiannual coupons.

Company (Ticker)	Coupon	Maturity	Last Price	Last Yield	EST $ Vol (000s)
Xenon, Inc. (XIC)	6.600	Jan 15, 2035	94.303	??	57,374
Kenny Corp. (KCC)	7.240	Jan 15, 2032	??	6.26	48,953
Williams Co. (WICO)	??	Jan 15, 2038	96.855	6.51	43,814

What is the coupon rate for the Williams Co. bond? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)