| Year | Month | Dividend (%) |
|---|---|---|
| 2026 | Apr | 55 |
| 2025 | Apr | 55 |
| 2024 | Apr | 50 |
| 2023 | Apr | 35 |
| 2019 | Apr | 25 |
| 2018 | Apr | 43 |
| 2017 | Apr | 43 |
| 2016 | Apr | 43 |
| 2015 | Apr | 43 |
| 2014 | Apr | 43 |
| 2013 | Apr | 43 |
| 2012 | Apr | 43 |
| 2011 | May | 38 |
| 2010 | May | 33 |
| 2009 | May | 30 |
| 2008 | May | 30 |
| 2007 | May | 30 |
| 2006 | May | 25 |
| 2005 | May | 20 |
| 2003 | May | 25 |
| 2002 | May | 10 |
| 2001 | Jun | 5 |
| 2000 | Sep | 20 |
| 1999 | Sep | 10 |
| 1998 | Jun | 20 |
| 1997 | Jul | 20 |