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.

$\backslash$table$[[$Maturity$,,],[$Rate$,$Month$/$Year$,$Bid,Asked,Change,Ask Yield$],[??,$May $30,103\mathrm{.}4638,103\mathrm{.}5366,+\mathrm{.}3041,6\mathrm{.}039],[5\mathrm{.}324,$May $33,104\mathrm{.}4978,104\mathrm{.}6435,+\mathrm{.}4317,??$