Assume the zero$-$coupon yields on default$-$free securities are as summarized in the following table: $($Click on the following icon in order to copy its contents into a spreadsheet

$\backslash$table$[[$Maturity $($years$),1,2,3,4,5],[$Zero$-$coupon YTM$,4\mathrm{.}00\%,4\mathrm{.}30\%,4\mathrm{.}50\%,4\mathrm{.}70\%,4\mathrm{.}80\%$