| Board of Directors | 1980 – 2018 |
| Chairman | 2022 – 2025 |
| Board of Directors | 2019 – 2022 |
| Board of Directors | 1980 – 2000 |
| Board of Directors | 2019 – 2022 |
| Board of Directors | 2016 – 2018 |
| Board of Directors | 1980 – 1988 |
| Board of Directors | 1980 – 1988 |
| Board of Directors | 2022 – 2025 |
| Board of Directors | 2018 – 2019 |
| Board of Directors | 2022 – 2024 |
| Chairman | 2018 – 2022 |
| Board of Directors | 1980 – 2018 |
| Board of Directors | 1980 – 2016 |