| Board of Directors | 2006 – 2010 |
| Board of Directors | 1991 – 2003 |
| Board of Directors | 2017 – 2017 |
| Board of Directors | 1991 – 1993 |
| Board of Directors | 1991 – 1997 |
| Board of Directors | 1991 – 1999 |
| Board of Directors | 2019 – 2019 |
| Board of Directors | 1997 – 2000 |
| Board of Directors | 2000 – 2002 |
| Chairman | 2016 – 2017 |
| Chairman | 2019 – 2019 |
| Board of Directors | 2006 – 2006 |
| Board of Directors | 2004 – 2005 |
| Board of Directors | 2003 – 2005 |
| Chairman | 1991 – 1993 |
| Board of Directors | 1991 – 2002 |
| Board of Directors | 2002 – 2017 |
| Board of Directors | 1997 – 1999 |
| Board of Directors | 2019 – 2019 |
| Board of Directors | 1997 – 2008 |
| Board of Directors | 1991 – 1993 |