On January 1, 2020, Vahsholtz Corporation purchased 5,000 shares of treasury stock. Other information regarding Vahsholtz Corporation is provided as follows 2019 2020 Net Income Dividends on preferred stock Dividends on common stock $100,000 $110,000 $30,000 $30,000 $20,000 $18,000 $600,000 $750,000 $750,000 $830,000 Common stockholders' equity beginning of year Common stockholders' equity end of year Compute return on common stockholders'equity for each year (Round answer to 1 decimal place, eg. 10.5.) 2019 2020 Return on common stockholders' equity