| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | Apr | 100 |
| 2024 | May | 100 |
| 2023 | May | 45 |
| 2022 | May | 10 |
| 2021 | May | 10 |
| 2019 | Jan | 200 |
| 2018 | May | 75 |
| 2018 | Jan | 200 |
| 2017 | May | 75 |
| 2017 | Jan | 200 |
| 2016 | May | 50 |
| 2016 | Jan | 225 |
| 2015 | May | 55 |
| 2014 | Aug | 70 |
| 2014 | Apr | 30 |
| 2014 | Jan | 20 |
| 2013 | Sep | 15 |
| 2013 | Apr | 25 |
| 2013 | Jan | 20 |
| 2012 | Nov | 20 |
| 2012 | Sep | 15 |
| 2012 | May | 10 |
| 2012 | Mar | 40 |
| 2012 | Jan | 20 |
| 2011 | Oct | 20 |
| 2011 | Aug | 20 |
| 2011 | Apr | 35 |
| 2011 | Jan | 20 |
| 2010 | Nov | 20 |
| 2010 | Aug | 105 |
| 2010 | Apr | 20 |
| 2010 | Jan | 15 |
| 2009 | Nov | 10 |
| 2009 | Aug | 10 |
| 2009 | Jun | 15 |
| 2008 | Oct | 15 |
| 2008 | Apr | 20 |
| 2008 | Jan | 20 |
| 2007 | Nov | 20 |
| 2007 | Aug | 10 |
| 2007 | Mar | 20 |
| 2007 | Jan | 20 |
| 2006 | Oct | 20 |
| 2006 | Aug | 10 |
| 2006 | Apr | 20 |
| 2006 | Jan | 20 |
| 2005 | Oct | 20 |
| 2005 | Aug | 30 |
| 2005 | Jan | 20 |
| 2004 | Nov | 20 |
| 1999 | May | 25 |
| 1998 | Jun | 35 |
| 1997 | Jun | 32 |