Suppose Wacken, Limited just issued a dividend of $$2\mathrm{.}54$ per share on its common stock. The company paid dividends of $$2\mathrm{.}04,$$$2\mathrm{.}11,$$$2\mathrm{.}28,$ and $$2\mathrm{.}38$ per share in the last four years. If the stock currently sells for $$73,$what is your best estimate of the company's cost of equity capital using arithmetic and geometric growth rates?

Note: Do not round intermediate calculations and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$