Q$33$ A stock has had returns of $9\mathrm{.}3$ percent, $20\mathrm{.}4$ percent, $13\mathrm{.}7$ percent, $-6$ percent, $18\mathrm{.}7$ percent, $-11$ percent over the last six years. What is the arithmetic average return for the stock?

$13\mathrm{.}18\%$

$6\mathrm{.}82\%$

$9\mathrm{.}02\%$

$7\mathrm{.}35\%$

$7\mathrm{.}52\%$