| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 85 |
| 2024 | May | 170 |
| 2023 | May | 130 |
| 2022 | May | 130 |
| 2021 | Jun | 100 |
| 2020 | Feb | 100 |
| 2019 | May | 100 |
| 2018 | May | 100 |
| 2017 | May | 100 |
| 2016 | Mar | 100 |
| 2015 | Jun | 100 |
| 2014 | May | 75 |
| 2013 | May | 75 |
| 2012 | Sep | 75 |
| 2011 | Jul | 75 |
| 2010 | May | 50 |
| 2009 | Mar | 50 |
| 2008 | Mar | 50 |
| 2007 | Feb | 30 |
| 2006 | Jan | 25 |
| 2005 | Jan | 21 |
| 2004 | Feb | 21 |
| 2003 | Feb | 21 |
| 2002 | Jan | 21 |
| 2001 | Jan | 18 |
| 2000 | Jan | 18 |
| 1999 | Feb | 18 |
| 1998 | Feb | 18 |
| 1997 | Feb | 18 |