|   | 
2017 | 
2016 | 
2015 | 
2014 | 
2012 | 
2011 | 
2010 | 
| 1. Profitability | 
 
 1.1. 
Return on sales | 0.01 | 0.01 | 0.05 | 0.05 | 0.01 | 0.00 | 0.01 | 
 
 1.2. 
Return on Shareholders' Equity | 0.06 | 0.02 | 0.23 | 0.31 | 0.16 | 0.06 | 0.10 | 
 
 1.3. 
Return on liabilities | 0.02 | 0.01 | 0.11 | 0.15 | 0.04 | 0.01 | 0.02 | 
| 2. Liquidity | 
 
 2.1. 
Current liquidity | 1.14 | 1.15 | 1.63 | 1.18 | 0.95 | 1.06 | 0.96 | 
 
 2.2. 
Acid test liquidity | 0.49 | 0.47 | 0.53 | 0.51 | 0.50 | 0.61 | 0.41 | 
 
 2.3. 
Absolute liquidity | - | - | - | - | - | - | - | 
| 3. Autonomity | 
 
 3.1. 
Financial autonomity | 0.30 | 0.35 | 0.32 | 0.32 | 0.18 | 0.17 | 0.19 | 
 
 3.2. 
Debt ratio | 3.38 | 2.83 | 3.09 | 3.12 | 5.41 | 5.95 | 5.40 | 
| 4. Turnover | 
 
 4.1. 
Stock turnover, days | 84.56 | 51.99 | 48.04 | 30.76 | 32.05 | 37.52 | 47.08 | 
 
 4.2. 
Stock turnover, times per year | 4.26 | 6.93 | 7.49 | 11.70 | 11.23 | 9.59 | 7.65 | 
 
 4.3. 
Receivables turnover, days | 67.84 | 48.19 | 49.84 | 48.33 | 49.96 | 52.75 | 52.95 | 
| 5. Effectiveness | 
 
 5.1. 
Expenses effectiveness | 1.02 | 1.01 | 1.06 | 1.06 | 1.02 | 1.01 | 1.01 | 
 
 5.2. 
Revenues  effectiveness | 0.98 | 0.99 | 0.95 | 0.94 | 0.98 | 0.99 | 0.99 | 
| 6. Financial stability | 
 
 6.1. 
Working capital owned by the company (WCO) | -2 955.00 | -2 308.00 | -410.00 | -793.00 | -2 369.00 | -2 692.00 | -1 191.00 | 
 
 6.2. 
Permanent working capital (PWC) | 966.00 | 896.00 | 3 796.00 | 1 125.00 | -211.00 | 359.00 | -102.00 | 
 
 6.3. 
Principal stocks forming sources (PSFS) | 7 751.00 | 6 799.00 | 9 774.00 | 7 135.00 | 5 763.00 | 5 024.00 | 5 254.00 | 
 
 6.4. 
Financial stability | non-stable | non-stable | normal | non-stable | non-stable | non-stable | non-stable | 
| 7. Other ratios | 
 
 7.1. 
Financial result per share | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |