| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 125 |
| 2024 | May | 125 |
| 2023 | May | 125 |
| 2022 | May | 100 |
| 2021 | May | 100 |
| 2020 | Jun | 100 |
| 2019 | May | 100 |
| 2018 | May | 100 |
| 2017 | Jun | 125 |
| 2016 | Nov | 75 |
| 2015 | Jun | 25 |
| 2014 | Jun | 125 |
| 2013 | May | 125 |
| 2012 | May | 100 |
| 2011 | May | 100 |
| 2010 | Jun | 100 |
| 2009 | Jun | 100 |
| 2008 | Jun | 70 |
| 2007 | Nov | 70 |
| 2006 | Jun | 70 |
| 2005 | Jun | 45 |
| 2004 | Jun | 36 |
| 2003 | Jun | 30 |
| 2002 | Jun | 33 |
| 2001 | Jun | 27 |
| 2000 | Jul | 25 |
| 1999 | Aug | 25 |
| 1998 | Aug | 25 |