| Year | Month | Dividend (%) |
|---|---|---|
| 2015 | May | 10 |
| 2014 | May | 10 |
| 2013 | May | 10 |
| 2012 | May | 15 |
| 2011 | Feb | 30 |
| 2010 | May | 20 |
| 2009 | Nov | 30 |
| 2008 | Jul | 50 |
| 2007 | Oct | 100 |
| 2007 | Aug | 60 |
| 2007 | Jan | 80 |
| 2006 | Aug | 60 |
| 2005 | Aug | 50 |
| 2004 | Aug | 80 |
| 2003 | Oct | 70 |
| 2003 | Feb | 35 |
| 2002 | Jun | 35 |
| 2001 | Nov | 35 |
| 2000 | Oct | 30 |
| 2000 | May | 15 |