The following table shows yields to maturity on U$.$S$.$ Treasury securities as of January $1,2018$:

Term to Maturity Yield to Maturity

$1$ year $3\mathrm{.}40\%$

$2$ years $4\mathrm{.}30\%$

$3$ years $5\mathrm{.}00\%$

$4$ years $5\mathrm{.}40\%$

$5$ years $5\mathrm{.}80\%$

$10$ years $6\mathrm{.}40\%$

Based on the data in the table, calculate the implied forward one$-$year rate of interest at January $1,2021.$ Do not round intermediate calculations. Round your answer to two decimal places.