| Year | Month | Dividend (%) |
|---|---|---|
| 2015 | May | 47 |
| 2014 | May | 30 |
| 2014 | Jan | 25 |
| 2013 | May | 67 |
| 2012 | May | 38 |
| 2011 | May | 37 |
| 2010 | May | 30 |
| 2009 | May | 15 |
| 2009 | Apr | 15 |
| 2009 | Apr | 15 |
| 2009 | Mar | 15 |
| 2008 | May | 13 |
| 2008 | Mar | 15 |
| 2007 | May | 13 |
| 2006 | Nov | 15 |
| 2006 | May | 10 |
| 2006 | Jan | 15 |
| 2005 | May | 14 |
| 2005 | Feb | 6 |
| 2004 | May | 10 |
| 2003 | Oct | 10 |
| 2003 | Apr | 15 |
| 2002 | Apr | 12 |
| 2001 | Jun | 12 |
| 2000 | May | 14 |