| Current (1) |
| Chief Executive Officer | 2024 |
| Former (24) |
| Management | 2008 – 2015 |
| Management | 2014 – 2015 |
| Management | 2009 – 2012 |
| Management | 2014 – 2015 |
| Chief Executive Officer | 2020 – 2022 |
| Management | 2012 – 2014 |
| Management | 1983 – 1994 |
| Management | 2004 – 2008 |
| Management | 1983 – 1990 |
| Management | 2014 – 2015 |
| Management | 1983 – 1996 |
| Chief Executive Officer | 2022 – 2024 |
| Management | 1996 – 2001 |
| Chief Executive Officer | 2017 – 2019 |
| Chief Executive Officer | 2013 – 2015 |
| Chief Executive Officer | 2015 – 2017 |
| Management | 2001 – 2004 |
| Chief Executive Officer | 2009 – 2013 |
| Chief Executive Officer | 2009 – 2009 |
| Chief Executive Officer | 2019 – 2020 |
| Management | 2014 – 2015 |
| Management | 2008 – 2009 |
| Management | 2014 – 2015 |
| Chief Executive Officer | 2008 – 2009 |