On January 1, 2020, Coronado Corporation purchased1,800shares of treasury stock. Other information regarding Coronado Corporation is provided as follows.

2019 2020

net income 205,000 220,000

dividends on 34,000 34,000

preferred stock

Dividends on 18,000 25,000

common stock

Common stockholders' 595,000 667,000

equity beginning of year

Common stockholders' 667,000 746,000

equity end of year

Compute return on common stockholders' equity for each year.(Round answer to 1 decimal place e.g. 10.5.)

Return on common stockholders' equity

2019 %

2020 %