| Year | Month | Dividend (%) |
|---|---|---|
| 2026 | Jan | 65 |
| 2025 | Mar | 65 |
| 2024 | Jan | 65 |
| 2023 | Mar | 75 |
| 2015 | Jan | 20 |
| 2014 | Oct | 20 |
| 2014 | May | 20 |
| 2014 | Jan | 20 |
| 2013 | Oct | 20 |
| 2013 | May | 20 |
| 2012 | Oct | 20 |
| 2012 | Jul | 20 |
| 2012 | Mar | 20 |
| 2012 | Jan | 10 |
| 2011 | Oct | 40 |
| 2011 | Mar | 30 |
| 2011 | Jan | 40 |
| 2010 | Oct | 40 |
| 2010 | Jan | 70 |
| 2009 | Oct | 40 |
| 2009 | Mar | 25 |
| 2009 | Jan | 40 |
| 2008 | Oct | 35 |
| 2008 | Mar | 20 |
| 2008 | Jan | 40 |
| 2007 | Oct | 20 |
| 2007 | Mar | 25 |
| 2007 | Jan | 25 |
| 2006 | Oct | 20 |
| 2006 | Mar | 25 |
| 2006 | Jan | 25 |
| 2005 | Oct | 20 |
| 2005 | Mar | 35 |
| 2004 | Nov | 35 |
| 2004 | May | 40 |
| 2003 | Oct | 30 |
| 1999 | May | 25 |
| 1998 | Apr | 25 |
| 1997 | Apr | 25 |