| Year | Month | Dividend (%) |
|---|---|---|
| 2015 | May | 70 |
| 2014 | May | 23 |
| 2014 | Jan | 45 |
| 2013 | May | 190 |
| 2012 | May | 205 |
| 2011 | Apr | 200 |
| 2010 | Apr | 165 |
| 2009 | Apr | 80 |
| 2009 | Feb | 45 |
| 2008 | Apr | 60 |
| 2008 | Mar | 45 |
| 2007 | Apr | 50 |
| 2007 | Mar | 40 |
| 2006 | Apr | 35 |
| 2005 | Nov | 35 |
| 2005 | Apr | 35 |
| 2005 | Jan | 30 |
| 2004 | Apr | 30 |
| 2003 | Dec | 30 |
| 2003 | May | 45 |
| 2002 | May | 40 |
| 2001 | Jun | 40 |
| 2000 | Jun | 20 |
| 2000 | Mar | 20 |
| 1999 | May | 35 |
| 1998 | May | 35 |