The real risk$-$free rate is $2\%.$ Inflation is expected to be $2\%$ this year, $4\%$ next year, and then $3\mathrm{.}5\%$ thereafter. The maturity risk premium is estimated to be $0\mathrm{.}0005\backslash$times $($t $-1),$ where t $=$ number of years to maturity. What is the nominal interest rate on a $7-$year Treasury security? Do not round intermediate calculations. Round your answer to two decimal places.