| Year | Absolute control | Relative holding | General equity participation |
| 2008 | 3.9 | 15.7 | 80 |
| 2009 | 7.7 | 16.1 | 76.3 |
| 2010 | 3.7 | 12.1 | 84.2 |
| 2011 | 4.9 | 8.6 | 86.5 |
| 2012 | 4.4 | 11 | 84.6 |
| 2013 | 5.2 | 10.2 | 84.6 |
| 2014 | 3.4 | 12.3 | 84.3 |
| 2015 | 3.5 | 7.05 | 89.5 |
| 2016 | 3.1 | 7.9 | 89 |