| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 15 |
| 2024 | May | 20 |
| 2012 | May | 30 |
| 2011 | May | 40 |
| 2010 | Feb | 40 |
| 2009 | Jun | 40 |
| 2008 | Jun | 60 |
| 2007 | May | 30 |
| 2007 | Mar | 50 |
| 2007 | Jan | 50 |
| 2006 | May | 50 |
| 2006 | Jan | 50 |
| 2005 | Apr | 50 |
| 2005 | Jan | 50 |
| 2004 | May | 40 |
| 2004 | Jan | 50 |
| 2003 | Aug | 75 |
| 2002 | May | 75 |
| 2000 | Feb | 40 |
| 1999 | Jul | 50 |