| Former (22) |
| Board of Directors | 1906 – 1996 |
| Board of Directors | 2010 – 2012 |
| Board of Directors | 1906 – 1997 |
| Chairman | 2001 – 2010 |
| Board of Directors | 2003 – 2007 |
| Board of Directors | 2015 – 2017 |
| Board of Directors | 2007 – 2020 |
| Chairman | 2010 – 2020 |
| Board of Directors | 2001 – 2015 |
| Board of Directors | 2015 – 2020 |
| Board of Directors | 2017 – 2019 |
| Deputy Chairman | 1906 – 1996 |
| Board of Directors | 2001 – 2009 |
| Chairman | 1906 – 1998 |
| Board of Directors | 2009 – 2015 |
| Board of Directors | 1906 – 2003 |
| Board of Directors | 1997 – 2001 |
| Board of Directors | 2019 – 2020 |
| Board of Directors | 2012 – 2020 |
| Board of Directors | 1997 – 2001 |
| Board of Directors | 1998 – 2004 |
| Board of Directors | 1906 – 1997 |
