| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 6 |
| 2022 | May | 14 |
| 2021 | Jun | 12 |
| 2019 | May | 11 |
| 2018 | May | 16 |
| 2017 | Nov | 16 |
| 2016 | May | 11 |
| 2015 | Jun | 10 |
| 2014 | May | 12 |
| 2013 | May | 12 |
| 2011 | May | 15 |
| 2010 | May | 10 |
| 2009 | Jul | 9 |
| 2008 | May | 15 |
| 2007 | May | 15 |
| 2006 | May | 15 |
| 2005 | Jun | 10 |
| 2004 | Jun | 8 |
| 2003 | Jun | 6 |
| 2002 | Jul | 9 |
| 2000 | Sep | 6 |
| 1999 | Jul | 6 |
| 1998 | Jul | 10 |
| 1997 | Jun | 27 |