Use the ratios you calculated to evaluate the firm's performance over this period?

2018 2017 2016 2015 2014 Profitability Ratios (in %) Return on equity Return on assets Profit margin Gross margin 5.0% 3.6% 5.1% 46.3% 7.0% 5.0% 6.3% 47.7% 18.0% 11.7% 14.0% 49.7% 19.7% 13.5% 16.9% 46.6% 16.6% 9.3% 13.7% 44.0% Turnover-Control Ratios Asset turnover Fixed-asset turnover Inventory turnover Collection period (days) Days' sales in cash Payables period 1.5 5.5 2.4 3.2 35.6 29.6 1.7 5.1 2.3 7.5 19.3 38.5 1.7 5.2 2.2 4.3 17.2 50.4 1.7 6.5 2.2 3.3 34.8 40.4 1.5 6.4 2.3 4.1 55.7 47.3 T Leverage and Liquidity Ratios Assets to equity Debt to assets Debt to equity Times interest earned Current ratio Quick ratio (aka acid test) 1.5 31.3% 45.5% 1.4 26.8% 36.5% 205.4 3.2 1.2 1.4 29.1% 41.0% 21.6 2.9 0.9 1.5 35.1% 54.0% 46.5 2.4 0.6 1.8 44.1% 79.0% 28.6 3.1 1.3 25.4 3.0 1.0