| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 27 |
| 2024 | May | 15 |
| 2023 | May | 12 |
| 2022 | May | 45 |
| 2021 | Jun | 15 |
| 2019 | May | 7 |
| 2018 | May | 9 |
| 2017 | May | 9 |
| 2016 | May | 18 |
| 2015 | Jun | 27 |
| 2014 | May | 27 |
| 2013 | May | 27 |
| 2012 | May | 27 |
| 2011 | May | 27 |
| 2010 | May | 27 |
| 2009 | May | 45 |
| 2008 | May | 32 |
| 2007 | Jun | 27 |
| 2006 | May | 27 |
| 2005 | Jun | 15 |
| 2002 | Jul | 8 |
| 2001 | Aug | 10 |
| 2000 | Apr | 10 |
| 1999 | Jul | 15 |
| 1998 | Sep | 18 |
| 1997 | Jul | 23 |