| Board of Directors | 1996 – 2000 |
| Board of Directors | 2003 – 2003 |
| Board of Directors | 1992 – 1995 |
| Board of Directors | 2003 – 2008 |
| Chairman | 2008 – 2025 |
| Board of Directors | 2013 – 2025 |
| Board of Directors | 2024 – 2025 |
| Board of Directors | 1992 – 2009 |
| Board of Directors | 2008 – 2015 |
| Board of Directors | 2024 – 2025 |
| Board of Directors | 2008 – 2013 |
| Board of Directors | 1992 – 1996 |
| Board of Directors | 2015 – 2024 |
| Board of Directors | 1992 – 2009 |
| Board of Directors | 2000 – 2003 |