Nucor Corporation produces steel and steel products at its eight mills and is a major recycler of scrap metal. The following data relate to Nucor for four years. 2011 Nucor Corporation ($ in millions) Total assets Common stockholders' equity Total debt Sales Net income Interest expense Income tax rate 2011 $14,570.4 7,706.6 4,282.0 2012 $14, 152.1 7,885.4 3,660.1 19,429.3 593.1 162.4 0.37 2013 $15, 203.3 7,910. 3 4,409.9 19,052.0 585.5 146.9 0.37 2014 $15,615.9 8 ,075.1 4,584.4 21,105.1 815.8 169.3 0.37 Required: 1. Calculate Nucor's ROA for 2012, 2013, and 2014. Decompose ROA into operating profit margin and asset turnover components. 2. Has Nucor's profitability changed over the three years? 3. Calculate the rate of return on common stockholders' equity for 2012, 2013, and 2014. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Calculate Nucor's ROA for 2012, 2013, and 2014. Decompose ROA into operating profit margin and asset turnover components. (Round your answers for "ROA" and "Operating profit margin" to 3 decimal places and "Asset turnover" to 2 decimal places.) 2012 2013 2014 ROA Operating profit margin Asset turnover Required 1 Required 2 Required 3 Has Nucor's profitability changed over the three years? Has Nucor's profitability changed over the three years? Required 1 Required 2 Required 3 Calculate the rate of return on common stockholders' equity for 2012, 2013, and 2014. (Round your answers to 3 decimal places.) - 2012 2013 2014 Rate of return on common stockholders' equity