| Year | Month | Dividend (%) |
|---|---|---|
| 2014 | May | 15 |
| 2013 | May | 10 |
| 2011 | Oct | 15 |
| 2011 | Apr | 25 |
| 2010 | Oct | 25 |
| 2010 | May | 50 |
| 2010 | Jan | 50 |
| 2009 | May | 50 |
| 2008 | Apr | 70 |
| 2007 | Jun | 70 |
| 2006 | Aug | 100 |
| 2005 | May | 75 |
| 2004 | May | 20 |
| 2004 | Jan | 10 |
| 2003 | May | 30 |
| 2002 | Jun | 30 |
| 2001 | Aug | 25 |
| 2000 | Aug | 25 |
| 2000 | Apr | 25 |
| 1999 | Aug | 25 |
| 1998 | Jun | 25 |
| 1997 | Sep | 25 |