| Year | Month | Dividend (%) |
|---|---|---|
| 2015 | Jul | 50 |
| 2014 | May | 50 |
| 2013 | May | 75 |
| 2012 | May | 20 |
| 2012 | Mar | 100 |
| 2011 | Jun | 15 |
| 2010 | Jun | 50 |
| 2008 | Jun | 50 |
| 2007 | May | 45 |
| 2007 | Jan | 40 |
| 2006 | May | 85 |
| 2005 | May | 75 |
| 2004 | May | 35 |
| 2004 | Apr | 25 |
| 2003 | Jun | 44 |
| 2002 | Jun | 40 |
| 2001 | May | 30 |
| 2000 | Apr | 30 |
| 2000 | Jan | 3 |
| 1999 | Jun | 30 |
| 1998 | Jul | 15 |
| 1997 | Jul | 25 |