| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 12 |
| 2024 | May | 60 |
| 2023 | May | 75 |
| 2022 | Aug | 100 |
| 2021 | Jun | 100 |
| 2020 | Feb | 80 |
| 2019 | May | 75 |
| 2018 | May | 60 |
| 2017 | May | 60 |
| 2016 | Mar | 50 |
| 2015 | Jun | 25 |
| 2014 | May | 12 |
| 2013 | May | 20 |
| 2012 | May | 30 |
| 2011 | Jun | 12 |
| 2010 | Jun | 30 |
| 2009 | Jun | 30 |
| 2008 | Jun | 30 |
| 2007 | Jun | 30 |
| 2006 | May | 25 |
| 2005 | Jun | 20 |
| 2004 | Jun | 20 |
| 2003 | Aug | 18 |
| 2002 | Jul | 25 |
| 2001 | Jun | 25 |
| 2000 | May | 20 |
| 1999 | May | 25 |
| 1998 | May | 30 |