| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 6 |
| 2024 | May | 6 |
| 2023 | Jul | 6 |
| 2022 | May | 6 |
| 2021 | Jun | 6 |
| 2020 | Jun | 6 |
| 2019 | May | 6 |
| 2018 | Jul | 5 |
| 2018 | Jul | 6 |
| 2017 | May | 5 |
| 2016 | May | 5 |
| 2015 | May | 5 |
| 2014 | May | 5 |
| 2013 | May | 5 |
| 2012 | May | 5 |
| 2011 | May | 5 |
| 2010 | May | 4 |
| 2009 | May | 4 |
| 2008 | Jun | 4 |
| 2007 | May | 4 |
| 2006 | May | 4 |
| 2005 | Jun | 4 |
| 2004 | Jun | 4 |
| 2003 | Jun | 4 |
| 2002 | Jun | 4 |
| 2001 | Jun | 4 |
| 2000 | Jun | 4 |
| 1999 | Jul | 4 |
| 1998 | Jul | 4 |
| 1998 | Jan | 4 |