SUPERVALU, one of the largest grocery retailers in the United States, is headquartered in Minneapolis. Suppose the following financial information $($in millions$)$ was taken from the company's $2022$ annual report: net sales $$43,300,$ net income $$357,$ beginning stockholders' equity $$2,475,$ and ending stockholders' equity $$2,752.$ There were no dividends paid on preferred stock.

Compute the return on common stockholders' equity. $($Round answer to $2$ decimal places, e$.$g$.12\mathrm{.}56\%.)$