| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 50 |
| 2024 | May | 36 |
| 2023 | May | 36 |
| 2022 | Aug | 36 |
| 2021 | Oct | 36 |
| 2021 | May | 36 |
| 2020 | Feb | 18 |
| 2019 | Oct | 9 |
| 2019 | Jul | 9 |
| 2019 | May | 6 |
| 2019 | Jan | 12 |
| 2018 | Oct | 6 |
| 2018 | Jul | 6 |
| 2018 | May | 3 |
| 2018 | Jan | 6 |
| 2017 | Aug | 6 |
| 2017 | May | 3 |
| 2017 | Jan | 6 |
| 2016 | Aug | 6 |
| 2016 | May | 3 |
| 2015 | Oct | 3 |
| 2015 | Jul | 3 |
| 2015 | Feb | 3 |
| 2014 | Aug | 3 |
| 2014 | May | 3 |
| 2011 | May | 12 |
| 2006 | May | 10 |
| 1997 | Feb | 10 |