| Former (15) |
| Board of Directors | 1982 – 1994 |
| Chairman | 2010 – 2011 |
| Board of Directors | 2010 – 2011 |
| Board of Directors | 2005 – 2010 |
| Board of Directors | 1982 – 1994 |
| Board of Directors | 2005 – 2010 |
| Board of Directors | 1982 – 1992 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 1982 – 2005 |
| Board of Directors | 2000 – 2002 |
| Board of Directors | 2005 – 2010 |
| Board of Directors | 2000 – 2004 |
| Board of Directors | 2010 – 2011 |
| Deputy Chairman | 2010 – 2011 |
| Board of Directors | 2004 – 2005 |