A bond trader purchased zero$-$coupon U$.$S$.$ Treasury bond $3\mathrm{.}00$ years ago for $$639\mathrm{.}00.$ Today, $3\mathrm{.}00$ years later, the bond

has $7\mathrm{.}00$ years until maturity and is trading at a yield to maturity of $3\mathrm{.}20\%.$ If the trader sells the bond today, what annual

return did she realize?

Answer format: Percentage Round to: $2$ decimal places $($Example: $9\mathrm{.}24\%,\%$ sign required. Will accept decimal format

rounded to $4$ decimal places $($ex: $0\mathrm{.}0924))$