| Current (2) |
| Board of Directors | 2024 |
| Chairman | 2024 |
| Former (30) |
| Board of Directors | 2004 – 2004 |
| Deputy Chairman | 2001 – 2003 |
| Board of Directors | 1980 – 2001 |
| Board of Directors | 2001 – 2003 |
| Board of Directors | 1980 – 1991 |
| Board of Directors | 1980 – 1996 |
| Board of Directors | 1980 – 1996 |
| Deputy Chairman | 2013 – 2017 |
| Board of Directors | 1980 – 1991 |
| Board of Directors | 2010 – 2017 |
| Board of Directors | 2014 – 2019 |
| Deputy Chairman | 2017 – 2019 |
| Deputy Chairman | 2022 – 2024 |
| Board of Directors | 2008 – 2014 |
| Board of Directors | 1999 – 2003 |
| Board of Directors | 2003 – 2004 |
| Board of Directors | 2003 – 2007 |
| Chairman | 1980 – 2003 |
| Board of Directors | 2013 – 2016 |
| Board of Directors | 2004 – 2004 |
| Board of Directors | 1980 – 1996 |
| Board of Directors | 1999 – 2003 |
| Board of Directors | 2004 – 2008 |
| Board of Directors | 1980 – 1989 |
| Board of Directors | 2017 – 2019 |
| Chairman | 1980 – 1989 |
| Deputy Chairman | 1980 – 2001 |
| Board of Directors | 2017 – 2019 |
| Chairman | 1980 – 1991 |
| Board of Directors | 1980 – 2001 |