Valdez Corporation has bonds on the market with $18\mathrm{.}5$ years to maturity, a YTM of $7\mathrm{.}9$ percent, a par value of $$1,000,$ and a current price of $$1,067.$ The bonds make semiannual payments. What must the coupon rate be on these bonds?

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

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