A stock has generated an annual average return of $8\mathrm{.}0\%$ with a standard deviation of $45\mathrm{.}0\%$ during the last $10$ years. If the average risk$-$free rate was $1\mathrm{.}6\%,$ what was this stock's Sharpe Ratio? Round to two decimal places. Answer in decimals, rounded to two decimal places. $($e$.$g$.,0\mathrm{.}347=0\mathrm{.}35)$