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 $ 41,500, net income $ 429, beginning common stockholders' equity $ 2,604, and ending common stockholders' equity $ 2,882. Compute the return on common stockholders' equity. (Round answer to 1 decimal place, e.g. 10.5%.) Return on common stockholders' equity %