| Current (3) |
| Board of Directors | 2025 |
| Chairman | 2019 |
| Board of Directors | 2019 |
| Former (15) |
| Board of Directors | 1996 – 2006 |
| Chairman | 2014 – 2019 |
| Chairman | 1978 – 2008 |
| Board of Directors | 2017 – 2019 |
| Deputy Chairman | 2008 – 2009 |
| Board of Directors | 2007 – 2008 |
| Board of Directors | 2006 – 2011 |
| Board of Directors | 2019 – 2025 |
| Board of Directors | 2011 – 2013 |
| Board of Directors | 1978 – 1996 |
| Board of Directors | 2014 – 2017 |
| Board of Directors | 1978 – 1995 |
| Board of Directors | 1995 – 2007 |
| Board of Directors | 2009 – 2019 |
| Board of Directors | 2019 – 2021 |