The following table gives the rate of return for a certain mutual fund for each of the last five years:

Year Rate of Return

$2013-4\mathrm{.}7\%$

$201413\mathrm{.}7\%$

$2015-3\%$

$201612\mathrm{.}6\%$

$20179\%$

Compute the overall rate of return during this period.