| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 45 |
| 2024 | May | 40 |
| 2023 | May | 30 |
| 2022 | May | 23 |
| 2021 | May | 14 |
| 2020 | Aug | 14 |
| 2019 | May | 33 |
| 2018 | May | 33 |
| 2017 | May | 30 |
| 2016 | May | 8 |
| 2016 | Mar | 17 |
| 2015 | May | 17 |
| 2014 | May | 15 |
| 2013 | May | 15 |
| 2012 | Jul | 17 |
| 2011 | Jun | 14 |
| 2010 | Apr | 11 |
| 2009 | Jun | 11 |
| 2008 | Jul | 11 |
| 2007 | Nov | 11 |