You find the following Treasury bond quotes. To calculate the number of years until maturity, assume that it is currently May $2022.$ All of the bonds have a par value of $$1,000$ and pay semiannual coupons.

Rate Maturity Month$/$Year Bid Asked Change Ask Yield

$??$question mark May $31103\mathrm{.}5397103\mathrm{.}6275+\mathrm{.}32352\mathrm{.}229$

$6\mathrm{.}002$ May $36104\mathrm{.}4887104\mathrm{.}6344+\mathrm{.}4233??$question mark

$6\mathrm{.}138$ May $46??$question mark $??$question mark $+\mathrm{.}53403\mathrm{.}931$

In the above table, find the Treasury bond that matures in May $2031.$ What is the coupon rate for this bond?

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