| 2010 | 2009 | 2008 | |
| Wages and salaries (*) | 485,214 | 400,880 | 501,327 |
| Increase in employee benefits | 10,879 | 7,884 | 8,083 |
| Contributions to defined contribution plans | 5,243 | 3,694 | 4,182 |
| 501,336 | 412,458 | 513,592 |
.(*) Wages and salaries include compulsory social security contributions and bonuses.

