| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 80 |
| 2019 | May | 45 |
| 2019 | Jan | 40 |
| 2018 | Apr | 75 |
| 2018 | Jan | 45 |
| 2017 | May | 40 |
| 2017 | Jan | 20 |
| 2016 | Mar | 45 |
| 2015 | May | 45 |
| 2014 | May | 55 |
| 2013 | May | 50 |
| 2013 | Jan | 20 |
| 2012 | May | 40 |
| 2012 | Jan | 55 |
| 2011 | May | 25 |
| 2011 | Jan | 45 |
| 2010 | May | 20 |
| 2010 | Jan | 25 |
| 2008 | Mar | 60 |
| 2007 | Mar | 20 |
| 2007 | Jan | 20 |
| 2006 | May | 15 |
| 2006 | Jan | 15 |
| 2005 | Jun | 25 |