| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 30 |
| 2024 | May | 30 |
| 2023 | May | 30 |
| 2022 | May | 30 |
| 2021 | Jun | 30 |
| 2020 | Jun | 30 |
| 2019 | May | 30 |
| 2018 | May | 30 |
| 2017 | Aug | 30 |
| 2016 | May | 70 |
| 2016 | May | 30 |
| 2015 | May | 30 |
| 2014 | May | 20 |
| 2008 | Jul | 15 |
| 2007 | Jul | 35 |
| 2006 | Jul | 35 |
| 2005 | Jul | 35 |
| 2004 | Jun | 20 |
| 2003 | Jun | 35 |