| Year | Month | Dividend (%) |
|---|---|---|
| 2019 | May | 5 |
| 2018 | Jun | 16 |
| 2017 | May | 16 |
| 2016 | Jun | 16 |
| 2015 | Jul | 15 |
| 2014 | May | 15 |
| 2013 | May | 15 |
| 2012 | Jun | 15 |
| 2011 | May | 15 |
| 2010 | Jun | 15 |
| 2009 | Jul | 15 |
| 2008 | Jul | 15 |
| 2007 | Jul | 3 |
| 2007 | Mar | 12 |
| 2006 | Jul | 12 |
| 2005 | Jul | 10 |
| 2004 | Jul | 10 |
| 2003 | Jul | 10 |
| 2002 | Jul | 10 |
| 2001 | Jul | 9 |
| 2000 | Apr | 8 |
| 1999 | Jun | 8 |
| 1998 | Jul | 7 |