You've observed the following returns on Pine Computer's stock over the past five years: $-29\mathrm{.}1$ percent, $16\mathrm{.}4$ percent, $35\mathrm{.}8$ percent, $3\mathrm{.}7$ percent, and $22\mathrm{.}7$ percent. The average inflation rate over this period was $3\mathrm{.}37$ percent and the average $T-$bill rate over the period was $4\mathrm{.}3$ percent.

a$.$ 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$.,32\mathrm{.}16.$

b$.$ What was the average real risk premium?

Note: Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$