| Former (16) |
| Board of Directors | 2016 – 2018 |
| Board of Directors | 2014 – 2016 |
| Board of Directors | 2003 – 2006 |
| Board of Directors | 1990 – 1995 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 2018 – 2018 |
| Board of Directors | 1990 – 1992 |
| Board of Directors | 2014 – 2014 |
| Chairman | 2014 – 2018 |
| Board of Directors | 2001 – 2006 |
| Chairman | 1995 – 1998 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 1990 – 1996 |
| Deputy Chairman | 2016 – 2018 |