| Current (2) |
| Chairman | 2024 |
| Board of Directors | 2024 |
| Former (15) |
| Board of Directors | 2002 – 2003 |
| Board of Directors | 2020 – 2022 |
| Board of Directors | 2007 – 2012 |
| Board of Directors | 1985 – 2001 |
| Board of Directors | 1985 – 2004 |
| Board of Directors | 2022 – 2024 |
| Board of Directors | 2004 – 2007 |
| Board of Directors | 1985 – 1994 |
| Board of Directors | 1996 – 1999 |
| Board of Directors | 1985 – 1990 |
| Board of Directors | 2003 – 2003 |
| Board of Directors | 1999 – 2012 |
| Board of Directors | 1985 – 1996 |
| Board of Directors | 2012 – 2020 |
| Board of Directors | 2001 – 2002 |