| Former (36) |
| Board of Directors | 2019 – 2021 |
| Chairman | 1999 – 2003 |
| Board of Directors | 1996 – 1998 |
| Chairman | 2003 – 2009 |
| Board of Directors | 1996 – 1997 |
| Board of Directors | 1991 – 1996 |
| Board of Directors | 1991 – 1995 |
| Board of Directors | 2020 – 2024 |
| Board of Directors | 2012 – 2016 |
| Board of Directors | 2009 – 2012 |
| Board of Directors | 2009 – 2013 |
| Board of Directors | 1991 – 1996 |
| Board of Directors | 1998 – 1999 |
| Board of Directors | 1999 – 2001 |
| Board of Directors | 2012 – 2012 |
| Board of Directors | 2021 – 2024 |
| Board of Directors | 2013 – 2016 |
| Board of Directors | 2018 – 2021 |
| Board of Directors | 2016 – 2017 |
| Board of Directors | 2009 – 2009 |
| Board of Directors | 2002 – 2004 |
| Board of Directors | 2003 – 2009 |
| Board of Directors | 1991 – 1995 |
| Chairman | 2019 – 2024 |
| Board of Directors | 2021 – 2024 |
| Deputy Chairman | 2019 – 2024 |
| Board of Directors | 2009 – 2012 |
| Board of Directors | 1991 – 1993 |
| Deputy Chairman | 2012 – 2018 |
| Chairman | 2012 – 2019 |
| Board of Directors | 2000 – 2003 |
| Chairman | 1998 – 2000 |
| Board of Directors | 2001 – 2003 |
| Board of Directors | 1996 – 1999 |
| Board of Directors | 1991 – 1996 |
| Board of Directors | 2017 – 2020 |
