| Current (3) |
| Board of Directors | 2016 |
| Board of Directors | 2014 |
| Chairman | 2014 |
| Former (12) |
| Board of Directors | 2000 – 2006 |
| Board of Directors | 1992 – 1995 |
| Board of Directors | 2010 – 2013 |
| Chairman | 1992 – 1993 |
| Board of Directors | 2003 – 2014 |
| Board of Directors | 2014 – 2016 |
| Chairman | 1992 – 1995 |
| Board of Directors | 1992 – 2001 |
| Chairman | 1992 – 2002 |
| Board of Directors | 2010 – 2014 |
| Board of Directors | 1992 – 1993 |
| Board of Directors | 1992 – 1995 |