| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 500 |
| 2024 | May | 425 |
| 2023 | May | 400 |
| 2022 | May | 375 |
| 2021 | May | 300 |
| 2020 | Jul | 300 |
| 2019 | May | 350 |
| 2018 | May | 300 |
| 2017 | May | 150 |
| 2017 | Feb | 100 |
| 2016 | Mar | 135 |
| 2015 | Oct | 90 |
| 2015 | May | 90 |
| 2014 | Nov | 80 |
| 2014 | May | 70 |
| 2013 | Oct | 50 |
| 2013 | May | 60 |
| 2012 | Nov | 50 |
| 2012 | May | 50 |
| 2011 | Nov | 50 |
| 2011 | May | 40 |
| 2010 | Nov | 40 |
| 2010 | May | 35 |
| 2010 | Jan | 35 |
| 2009 | Jun | 45 |
| 2008 | Jun | 15 |
| 2007 | Oct | 15 |
| 2007 | Jun | 15 |
| 2006 | May | 15 |