| Year | Month | Dividend (%) |
|---|---|---|
| 2013 | Apr | 60 |
| 2012 | Nov | 60 |
| 2012 | May | 50 |
| 2012 | Feb | 50 |
| 2011 | Jul | 30 |
| 2011 | Feb | 60 |
| 2010 | Oct | 60 |
| 2010 | May | 50 |
| 2010 | Apr | 50 |
| 2010 | Feb | 30 |
| 2009 | Jul | 45 |
| 2009 | May | 30 |
| 2009 | Jan | 25 |
| 2008 | Jun | 140 |
| 2008 | Jan | 60 |
| 2007 | Jun | 50 |
| 2006 | Jun | 25 |
| 2005 | Jul | 12 |
| 2004 | Jul | 10 |
| 2003 | Jul | 9 |
| 2002 | Jun | 10 |
| 2001 | Jul | 15 |
| 2000 | Apr | 20 |
| 1999 | Jul | 20 |
| 1998 | Jul | 20 |