| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 20 |
| 2024 | May | 20 |
| 2023 | May | 30 |
| 2023 | Feb | 20 |
| 2022 | May | 30 |
| 2022 | Feb | 20 |
| 2021 | Oct | 20 |
| 2021 | May | 30 |
| 2020 | Nov | 30 |
| 2020 | May | 20 |
| 2020 | Feb | 50 |
| 2019 | May | 140 |
| 2019 | Feb | 80 |
| 2018 | May | 20 |
| 2017 | May | 20 |
| 2016 | Mar | 70 |
| 2016 | Jan | 40 |
| 2015 | Oct | 60 |
| 2015 | May | 35 |
| 2015 | Jan | 30 |
| 2014 | Oct | 45 |
| 2014 | Jun | 30 |
| 2014 | Feb | 25 |
| 2013 | Nov | 35 |
| 2013 | May | 25 |
| 2013 | Feb | 25 |
| 2012 | Oct | 30 |
| 2012 | May | 30 |
| 2012 | Jan | 40 |
| 2011 | Mar | 25 |
| 2011 | Jan | 25 |
| 2010 | May | 14 |
| 2010 | Jan | 36 |
| 2009 | May | 24 |
| 2008 | Oct | 36 |
| 2008 | May | 10 |
| 2008 | Jan | 20 |
| 2007 | Mar | 6 |
| 2007 | Jan | 10 |
| 2006 | May | 8 |
| 2006 | Feb | 14 |
| 2005 | Oct | 17 |
| 2005 | May | 7 |
| 2005 | Jan | 40 |
| 2004 | Oct | 40 |
| 2004 | May | 40 |
| 2003 | Oct | 35 |
| 2003 | Jun | 65 |
| 2001 | Oct | 20 |
| 2001 | Apr | 21 |
| 2001 | Jan | 15 |
| 2000 | May | 20 |
| 2000 | Feb | 15 |
| 1999 | Jul | 27 |
| 1997 | Jul | 22 |