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

$\backslash$table$[[$Maturity$,,,],[$Rate$,$Month$/$Year$,$Bid,Asked,Change,Ask Yield,,,,$],[??,$May $29,102\mathrm{.}725,102\mathrm{.}915,+\mathrm{.}3204,2\mathrm{.}18,,,,],[3\mathrm{.}850,$May $32,103\mathrm{.}168,103\mathrm{.}823,+\mathrm{.}4513,??,,,,],[4\mathrm{.}125,$May $38,??,??,+\mathrm{.}6821,3\mathrm{.}87,,,,]]$

In the above table, find the Treasury bond that matures in May $2029.$ 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$.,32\mathrm{.}16.$

Answer is complete but not entirely correct.

$\backslash$table$[[$Coupon rate,$3\mathrm{.}85]]$