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.

$04$:$28$:$27$

$\backslash$table$[[,$Maturity,,,Change,Ask Yield$],[\backslash$table$[[$Rate$],[??]],\backslash$table$[[$Month$/$Year$],[$May $32]],\backslash$table$[[$Bid$],[103\mathrm{.}5540]],\backslash$table$[[$Asked$],[103\mathrm{.}6422]],\backslash$table$[[$Change$],[+\mathrm{.}3093]],\backslash$table$[[$Ask Yield$],[2\mathrm{.}449]]],[\backslash$table$[[??$