| Chairman | 2003 – 2012 |
| Board of Directors | 2020 – 2022 |
| Board of Directors | 1998 – 2020 |
| Board of Directors | 1997 – 2000 |
| Chairman | 1997 – 1998 |
| Chairman | 2018 – 2020 |
| Board of Directors | 2012 – 2020 |
| Board of Directors | 1999 – 2001 |
| Board of Directors | 1999 – 2001 |
| Chairman | 2012 – 2015 |
| Chairman | 2020 – 2022 |
| Board of Directors | 1997 – 1998 |
| Chairman | 2015 – 2018 |
| Board of Directors | 2020 – 2022 |
| Board of Directors | 1998 – 1999 |