| Year | Month | Dividend (%) |
|---|---|---|
| 2026 | Jan | 50 |
| 2025 | May | 10 |
| 2025 | Jan | 65 |
| 2024 | Jan | 55 |
| 2023 | Mar | 40 |
| 2022 | May | 10 |
| 2022 | Mar | 50 |
| 2021 | Dec | 40 |
| 2021 | Mar | 25 |
| 2021 | Jan | 25 |
| 2020 | Jan | 64 |
| 2019 | May | 9 |
| 2019 | Jan | 63 |
| 2018 | May | 14 |
| 2018 | Jan | 77 |
| 2017 | May | 27 |
| 2017 | Jan | 85 |
| 2016 | May | 30 |
| 2016 | Feb | 25 |
| 2015 | May | 30 |
| 2015 | Feb | 30 |
| 2014 | May | 59 |
| 2014 | Jan | 45 |
| 2013 | May | 56 |
| 2013 | Feb | 40 |
| 2012 | May | 57 |
| 2012 | Jan | 30 |
| 2011 | May | 55 |
| 2010 | Nov | 20 |
| 2010 | May | 55 |
| 2009 | Dec | 20 |
| 2009 | Jun | 30 |
| 2009 | Jan | 40 |
| 2008 | May | 60 |
| 2007 | Nov | 40 |
| 2007 | May | 20 |
| 2007 | Feb | 25 |
| 2006 | Dec | 55 |
| 2006 | Apr | 20 |
| 2006 | Jan | 20 |
| 2005 | Dec | 60 |
| 2005 | Jun | 40 |
| 2004 | Dec | 40 |
| 2004 | Aug | 40 |
| 2003 | Dec | 40 |
| 2003 | Jun | 40 |
| 2003 | Jan | 30 |
| 2002 | Jun | 45 |
| 2001 | Jun | 40 |
| 2000 | May | 30 |
| 1999 | Aug | 35 |
| 1997 | Jul | 15 |