| Year | Month | Dividend (%) |
|---|---|---|
| 2018 | May | 5 |
| 2017 | Aug | 5 |
| 2016 | Aug | 5 |
| 2015 | Aug | 5 |
| 2014 | Aug | 5 |
| 2013 | Aug | 5 |
| 2012 | Aug | 5 |
| 2011 | Aug | 5 |
| 2010 | Aug | 5 |
| 2009 | Aug | 8 |
| 2008 | Aug | 5 |
| 2007 | Aug | 5 |
| 2006 | Aug | 5 |
| 2005 | Aug | 5 |
| 2004 | Aug | 5 |
| 2003 | Aug | 5 |
| 2002 | Sep | 5 |
| 2001 | Aug | 5 |
| 2000 | Mar | 5 |
| 1999 | Jul | 5 |
| 1997 | Jun | 5 |