| Current (4) |
| Chairman | 2022 |
| Board of Directors | 2022 |
| Board of Directors | 2000 |
| Board of Directors | 2018 |
| Former (14) |
| Board of Directors | 1996 – 1997 |
| Board of Directors | 2007 – 2013 |
| Board of Directors | 1997 – 2003 |
| Board of Directors | 1997 – 1999 |
| Board of Directors | 1997 – 1997 |
| Board of Directors | 2007 – 2025 |
| Board of Directors | 1997 – 2007 |
| Board of Directors | 1997 – 2000 |
| Board of Directors | 2010 – 2022 |
| Chairman | 1997 – 2022 |
| Board of Directors | 2001 – 2008 |
| Board of Directors | 1996 – 1997 |
| Board of Directors | 1999 – 2007 |
| Chairman | 1997 – 2000 |