You've observed the following returns on Pine Computer's stock over the past five years: $10$ percent, $-10$ percent, $17$ percent, $22$ percent, and $10$ percent. Suppose the average inflation rate over this period was $1\mathrm{.}5$ percent and the average $T-$bill rate over the period was $3$ percent.

a$.$ What was the average real return on the company's stock? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$