On January 1, 2017, Bramble Corp. purchased 4,500 shares of treasury stock. Other information regarding Bramble Corp. is provided as follows. 2017 2016 $102,027 $92,000 $23,712 $23,712 $23,500 $20,300 Weighted-average number of common shares outstanding 46,00055,000 $660,100 $451,000 $906,200 $616,000 Net income Dividends on preferred stock Dividends on common stock Common stockholders' equity beginning of year Common stockholders' equity end of year Compute return on common stockholders' equity for each year. (Round answers to 1 decimal place, e.g. 15.2.) 2016 2017 Return on common stockholders' equity