You$$ve observed the following returns on Pine Computer$$s stock over the past five years: $24\mathrm{.}9$ percent, $13\mathrm{.}6$ percent, $30\mathrm{.}2$ percent, $2\mathrm{.}3$ percent, and $21\mathrm{.}3$ percent. The average inflation rate over this period was $3\mathrm{.}23$ percent and the average T$-$bill rate over the period was $4\mathrm{.}3$ percent. What was the average real risk$-$free rate over this time period? Note: Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$