$9$ years ago Mary purchased shares in a certain mutual fund at Net Asset

Value $($NAV$)$ of $$96.$ She reinvested her dividends into the fund, and today

she has $7\mathrm{.}7\%$ more shares than when she started. If the fund's NAV has

increased by $39\mathrm{.}5\%$ since her purchase, compute the rate of return on her

investment if she sells her shares today.

Round your answer to the nearest tenth of a percent.