| Year | Month | Dividend (%) |
|---|---|---|
| 2012 | Apr | 50 |
| 2012 | Jan | 50 |
| 2011 | Aug | 50 |
| 2011 | Aug | 100 |
| 2011 | Apr | 100 |
| 2011 | Jan | 100 |
| 2010 | Aug | 100 |
| 2010 | Aug | 100 |
| 2010 | Apr | 100 |
| 2010 | Jan | 100 |
| 2009 | Sep | 75 |
| 2009 | Sep | 75 |
| 2009 | Apr | 75 |
| 2009 | Jan | 75 |
| 2008 | Sep | 100 |
| 2008 | Sep | 100 |
| 2008 | Apr | 100 |
| 2008 | Jan | 100 |
| 2007 | Aug | 100 |
| 2007 | Aug | 100 |
| 2007 | Apr | 100 |
| 2007 | Jan | 100 |
| 2006 | Aug | 200 |
| 2006 | Apr | 100 |
| 2006 | Jan | 100 |
| 2005 | Aug | 100 |
| 2005 | Aug | 100 |
| 2005 | Apr | 70 |
| 2005 | Jan | 70 |
| 2004 | Aug | 70 |
| 2004 | Aug | 70 |
| 2004 | Apr | 60 |
| 2004 | Jan | 50 |
| 2003 | Sep | 30 |
| 2003 | Sep | 100 |
| 2002 | Aug | - |
| 2001 | Aug | 70 |
| 2000 | Aug | 25 |
| 1999 | Sep | 25 |
| 1998 | Aug | 15 |
| 1997 | Oct | 10 |