| Year | Month | Dividend (%) |
|---|---|---|
| 2014 | May | 12 |
| 2013 | Jun | 8 |
| 2013 | May | 8 |
| 2013 | Apr | 8 |
| 2012 | Aug | 6 |
| 2012 | Jul | 7 |
| 2012 | Feb | 5 |
| 2011 | Nov | 6 |
| 2011 | Jul | 5 |
| 2011 | Apr | 5 |
| 2011 | Jan | 7 |
| 2010 | Oct | 7 |
| 2010 | May | 7 |
| 2010 | Jan | 8 |
| 2009 | Oct | 8 |
| 2009 | Aug | 4 |
| 2009 | Jul | 4 |
| 2009 | Apr | 7 |
| 2009 | Jan | 6 |
| 2008 | Aug | 18 |
| 2007 | Mar | 8 |
| 2006 | Nov | 10 |
| 2006 | Mar | 12 |
| 2005 | May | 7 |
| 2004 | May | 5 |
| 1998 | Mar | 13 |
| 1997 | Feb | 13 |