| Year | Month | Dividend (%) |
|---|---|---|
| 2014 | May | 10 |
| 2013 | May | 10 |
| 2012 | May | 15 |
| 2011 | Aug | 25 |
| 2010 | May | 50 |
| 2009 | Nov | 20 |
| 2008 | Jul | 10 |
| 2007 | Jun | 20 |
| 2006 | Jun | 80 |
| 2006 | May | 20 |
| 2006 | Jan | 80 |
| 2005 | Apr | 60 |
| 2004 | Jun | 20 |
| 2003 | Jun | 10 |
| 2002 | May | 40 |
| 2001 | Jul | - |
| 2001 | Apr | 15 |
| 2000 | May | 15 |
| 1999 | May | 55 |
| 1998 | Jun | 30 |
| 1997 | Jun | 45 |