| Former (15) |
| Chairman | 2018 – 2019 |
| Chairman | 2004 – 2018 |
| Board of Directors | 2004 – 2007 |
| Board of Directors | 2004 – 2012 |
| Board of Directors | 1992 – 1993 |
| Board of Directors | 1992 – 1994 |
| Board of Directors | 1992 – 1994 |
| Chairman | 2019 – 2021 |
| Chairman | 1992 – 1993 |
| Board of Directors | 1992 – 2000 |
| Board of Directors | 2019 – 2021 |
| Board of Directors | 2003 – 2007 |
| Board of Directors | 2013 – 2014 |
| Board of Directors | 1992 – 1994 |
| Board of Directors | 2014 – 2018 |