Calculate the arithmetic average of the following returns.

Year Return

$10\mathrm{.}12$

$2-0\mathrm{.}16$

$30\mathrm{.}24$

$4-0\mathrm{.}13$

$5-0\mathrm{.}02$

Enter the answer with $4$ decimals, e$.$g$.0\mathrm{.}1234.$