| Current (3) |
| Board of Directors | 2021 |
| Chairman | 2019 |
| Board of Directors | 2026 |
| Former (31) |
| Board of Directors | 2013 – 2016 |
| Board of Directors | 1930 – 1994 |
| Board of Directors | 2001 – 2007 |
| Board of Directors | 2016 – 2018 |
| Board of Directors | 2000 – 2001 |
| Chairman | 1994 – 2000 |
| Board of Directors | 1930 – 1994 |
| Deputy Chairman | 2011 – 2016 |
| Board of Directors | 1930 – 1990 |
| Board of Directors | 1930 – 1994 |
| Chairman | 2016 – 2019 |
| Board of Directors | 1930 – 1994 |
| Board of Directors | 2007 – 2016 |
| Board of Directors | 2014 – 2015 |
| Board of Directors | 1998 – 2001 |
| Chairman | 2012 – 2016 |
| Board of Directors | 1930 – 1992 |
| Board of Directors | 2024 – 2026 |
| Board of Directors | 1999 – 2000 |
| Deputy Chairman | 1930 – 1993 |
| Board of Directors | 1930 – 1992 |
| Board of Directors | 1930 – 1994 |
| Board of Directors | 2008 – 2014 |
| Board of Directors | 2018 – 2019 |
| Chairman | 2011 – 2012 |
| Board of Directors | 2016 – 2021 |
| Board of Directors | 1998 – 1999 |
| Board of Directors | 2019 – 2024 |
| Board of Directors | 1930 – 1994 |
| Chairman | 1930 – 1994 |
| Board of Directors | 1930 – 1991 |
