| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 100 |
| 2024 | May | 80 |
| 2023 | May | 70 |
| 2022 | May | 60 |
| 2021 | Jun | 50 |
| 2020 | Jul | 50 |
| 2019 | May | 50 |
| 2018 | May | 90 |
| 2017 | May | 40 |
| 2016 | May | 40 |
| 2015 | Apr | 45 |
| 2013 | Oct | 30 |
| 2012 | Nov | 30 |
| 2011 | Nov | 30 |
| 2010 | Oct | 30 |
| 2009 | Oct | 40 |
| 2008 | Oct | 30 |
| 2007 | Oct | 30 |
| 2006 | Nov | 30 |
| 2005 | Nov | 30 |
| 2004 | Oct | 30 |
| 2003 | Oct | 40 |
| 2002 | Oct | 30 |
| 2001 | Oct | 30 |
| 2000 | Nov | 33 |
| 1999 | May | 22 |
| 1998 | Apr | 22 |
| 1997 | May | 22 |