| 2012 | 2011 | 2010 | 2009 | 2008 | |
| Employees covered by collective bargaining agreements 1) | 63 2) | 68 | 69 | 76 | 73 |
| 1) Employees at production facilities covered by collective bargaining agreements. | |||||
| 2) Data covering 58 production facilities corresponding to 42,846 employees. | |||||