| Board of Directors | 2004 – 2005 |
| Board of Directors | 1978 – 1991 |
| Board of Directors | 1978 – 1996 |
| Board of Directors | 2003 – 2003 |
| Board of Directors | 2015 – 2017 |
| Board of Directors | 2005 – 2015 |
| Board of Directors | 1998 – 2000 |
| Board of Directors | 2003 – 2004 |
| Chairman | 2003 – 2005 |
| Board of Directors | 2010 – 2013 |
| Chairman | 2008 – 2014 |
| Board of Directors | 2005 – 2005 |
| Chairman | 2005 – 2005 |
| Board of Directors | 1998 – 2001 |
| Board of Directors | 1978 – 1991 |
| Chairman | 2005 – 2006 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 1978 – 1996 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 2001 – 2003 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 2003 – 2005 |
| Board of Directors | 1978 – 1996 |
| Board of Directors | 2005 – 2008 |
| Board of Directors | 2001 – 2003 |
| Board of Directors | 2005 – 2005 |
| Chairman | 1998 – 2000 |
| Board of Directors | 2015 – 2017 |
| Chairman | 2014 – 2017 |
| Chairman | 2000 – 2003 |
| Board of Directors | 2008 – 2010 |
| Board of Directors | 2013 – 2015 |