| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 48 |
| 2024 | May | 36 |
| 2023 | May | 30 |
| 2022 | May | 19 |
| 2016 | May | 20 |
| 2015 | May | 60 |
| 2014 | May | 13 |
| 2014 | Jan | 27 |
| 2013 | May | 80 |
| 2012 | May | 80 |
| 2011 | May | 80 |
| 2010 | May | 55 |
| 2009 | May | 50 |
| 2008 | May | 40 |
| 2007 | May | 20 |
| 2006 | Dec | 15 |
| 2006 | Apr | 35 |
| 2005 | May | 15 |
| 2005 | Feb | 20 |
| 2004 | May | 15 |
| 2004 | Jan | 20 |
| 2003 | Mar | 21 |