| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 30 |
| 2024 | Apr | 70 |
| 2023 | Apr | 65 |
| 2022 | May | 55 |
| 2021 | May | 10 |
| 2021 | May | 40 |
| 2020 | May | 40 |
| 2019 | May | 20 |
| 2018 | May | 10 |
| 2017 | May | 25 |
| 2016 | May | 12 |
| 2014 | May | 6 |
| 2013 | May | 15 |
| 2012 | May | 25 |
| 2011 | May | 20 |
| 2010 | May | 40 |
| 2009 | Jun | 25 |
| 2008 | Jun | 6 |
| 2007 | Jun | 9 |
| 2006 | Jun | 18 |
| 2005 | Jun | 10 |