The returns to a portfolio over the last $5$ years are:

Year

Portfolio Returns

$16\%$

$29\%$

$33\%$

$412\%$

$54\%$

The risk$-$free rate is $4\mathrm{.}45\%$ per year. Calculate the Sharpe ratio. Enter your answer as a number rather than a percentage. That is$,$ if your answer is $0\mathrm{.}92,$ then enter $0\mathrm{.}92$ rather than $92\%.$