| Current (2) |
| Chairman | 2026 |
| Board of Directors | 2026 |
| Former (15) |
| Deputy Chairman | 2012 – 2013 |
| Board of Directors | 1987 – 1993 |
| Board of Directors | 1987 – 1987 |
| Board of Directors | 1987 – 1989 |
| Board of Directors | 1987 – 1993 |
| Board of Directors | 1999 – 2000 |
| Chairman | 2013 – 2026 |
| Board of Directors | 2000 – 2013 |
| Deputy Chairman | 2017 – 2024 |
| Deputy Chairman | 2024 – 2026 |
| Board of Directors | 1987 – 1999 |
| Board of Directors | 1987 – 1989 |
| Chairman | 1987 – 1987 |
| Board of Directors | 2004 – 2005 |
| Board of Directors | 1987 – 1994 |