| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 20 |
| 2024 | Jan | 80 |
| 2022 | Dec | 80 |
| 2022 | Feb | 100 |
| 2021 | May | 30 |
| 2020 | Jun | 20 |
| 2019 | Jan | 75 |
| 2018 | May | 65 |
| 2017 | May | 50 |
| 2016 | Mar | 50 |
| 2015 | May | 50 |
| 2014 | May | 35 |
| 2013 | May | 50 |
| 2012 | May | 45 |
| 2011 | Jun | 40 |
| 2010 | Dec | 40 |
| 2010 | Jun | 60 |
| 2009 | Jun | 40 |
| 2008 | Jun | 50 |
| 2007 | Jul | 40 |
| 2006 | Jul | 42 |
| 2005 | Jul | 30 |
| 2004 | Jul | 36 |
| 2003 | Aug | 36 |
| 2002 | Jul | 35 |
| 2001 | Jul | 35 |
| 2000 | Apr | 30 |
| 1999 | Jul | 40 |
| 1998 | Jul | 60 |
| 1997 | Jun | 60 |