Carla Vista Tire Co$.$ just paid an annual dividend of $$1\mathrm{.}20$ on its common shares. If Carla Vista is expected to increase its annual dividend by $5\mathrm{.}1$ percent per year into the foreseeable future and the current price of Carla Vista's common shares is $$20\mathrm{.}65,$ what is the cost of common stock for Carla Vista? $($Round intermediate calculations to $4$ decimal places, e$.$g$.0\mathrm{.}1555$ and final answer to $2$ decimal places, e$.$g$.15\mathrm{.}25\%.)$

Cost of common stock $\%$