| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 380 |
| 2024 | May | 250 |
| 2023 | May | 170 |
| 2022 | May | 120 |
| 2020 | Jun | 40 |
| 2020 | Feb | 40 |
| 2019 | May | 110 |
| 2019 | Feb | 80 |
| 2018 | May | 90 |
| 2018 | Feb | 55 |
| 2017 | May | 50 |
| 2017 | Feb | 35 |
| 2016 | Mar | 100 |
| 2015 | May | 75 |
| 2014 | May | 65 |
| 2013 | May | 45 |
| 2013 | Feb | 35 |
| 2012 | May | 40 |
| 2012 | Feb | 60 |
| 2011 | Jun | 50 |
| 2011 | Feb | 75 |
| 2010 | May | 20 |
| 2010 | Jan | 60 |
| 2009 | Jan | 40 |
| 2008 | Mar | 60 |
| 2007 | Mar | 45 |
| 2007 | Jan | 30 |
| 2006 | Jun | 20 |
| 2006 | Feb | 25 |
| 2005 | Jun | 25 |
| 2003 | Nov | 10 |
| 2001 | Jun | - |
| 2000 | Jun | 10 |
| 1997 | Jun | 27 |