| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 125 |
| 2024 | May | 100 |
| 2023 | May | 100 |
| 2022 | May | 50 |
| 2021 | Jun | 50 |
| 2019 | Jul | 100 |
| 2018 | Jul | 100 |
| 2018 | Jan | 50 |
| 2017 | Sep | 50 |
| 2017 | Jan | 50 |
| 2016 | Jul | 50 |
| 2016 | Mar | 50 |
| 2016 | Jan | 50 |
| 2015 | Jul | 50 |
| 2014 | Aug | 50 |
| 2014 | Jan | 50 |
| 2013 | Feb | 50 |
| 2012 | May | 50 |
| 2011 | May | 50 |
| 2010 | May | 20 |
| 2010 | Feb | 30 |
| 2009 | Jul | 10 |
| 2008 | Jun | 30 |
| 2007 | Mar | 30 |
| 2006 | Jun | 30 |
| 2005 | May | 50 |
| 2004 | Jun | 40 |
| 2003 | May | 35 |
| 2002 | May | 35 |
| 2001 | Jun | 30 |
| 2000 | Apr | 30 |
| 1999 | Jul | 25 |