Calculate the arithmetic average return, given annual returns of:

Year $18\mathrm{.}83\%$

Year $25\mathrm{.}39\%$

Year $3-6\mathrm{.}03\%$

Year $45\mathrm{.}14\%$

Year $53\mathrm{.}88\%$

Round the answer to two decimals places in percentage form.