Suppose that the current one$-$year rate $($one$-$year spot rate$)$ and expected one$-$year

T$-$bill rates over the following three years $($i$.$e$.,$ years $2,3,$ and $4,$ respectively$)$ are as

follows:

${?}_1{R}_1=7\mathrm{.}9\%,E{(}_2{r}_1)=8\mathrm{.}9\%,E{(}_3{r}_1)=9\mathrm{.}4\%,E{(}_4{r}_1)=9\mathrm{.}75\%$

Using the unbiased expectations theory, calculate the current $($long$-$term$)$ rates for

one$-,$ two$-,$ three$-,$ and four$-$year$-$maturity Treasury securities$.$

Note: Round your percentage answers to $3$ decimal places $($e$.$g$.,32\mathrm{.}161).$