| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 175 |
| 2025 | Feb | 125 |
| 2024 | May | 140 |
| 2024 | Feb | 110 |
| 2023 | May | 125 |
| 2023 | Feb | 105 |
| 2022 | May | 110 |
| 2022 | Feb | 90 |
| 2021 | May | 100 |
| 2021 | Feb | 75 |
| 2020 | Mar | 100 |
| 2020 | Feb | 75 |
| 2019 | May | 85 |
| 2019 | Feb | 70 |
| 2018 | May | 80 |
| 2018 | Feb | 60 |
| 2017 | Jun | 60 |
| 2017 | Feb | 50 |
| 2016 | May | 55 |
| 2016 | Feb | 50 |
| 2015 | May | 50 |
| 2015 | Feb | 45 |
| 2014 | May | 50 |
| 2014 | Jan | 45 |
| 2013 | May | 40 |
| 2013 | Jan | 35 |
| 2012 | May | 35 |
| 2011 | Oct | 30 |
| 2011 | May | 25 |
| 2011 | Jan | 20 |
| 2010 | May | 20 |
| 2010 | Feb | 45 |
| 2009 | Jun | 25 |
| 2009 | Jan | 20 |
| 2008 | Jun | 20 |
| 2008 | Jan | 20 |
| 2007 | Jun | 30 |
| 2007 | Jan | 20 |
| 2006 | Jun | 30 |
| 2006 | Jan | 20 |
| 2005 | Jun | 20 |
| 2005 | Jan | 20 |
| 2004 | May | 5 |
| 2004 | Jan | 45 |
| 2003 | May | 45 |
| 2002 | Jun | - |