| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 100 |
| 2025 | Mar | 230 |
| 2024 | May | 150 |
| 2024 | Feb | 575 |
| 2023 | May | 285 |
| 2023 | Feb | 375 |
| 2022 | Feb | 573 |
| 2021 | Dec | 901 |
| 2021 | Mar | 776 |
| 2020 | Feb | 529 |
| 2019 | Mar | 552 |
| 2018 | Mar | 430 |
| 2017 | May | 100 |
| 2017 | Mar | 415 |
| 2016 | Mar | 150 |
| 2016 | Feb | 950 |
| 2015 | May | 130 |
| 2015 | Feb | 425 |
| 2014 | Oct | 300 |
| 2014 | Jan | 550 |
| 2013 | Oct | 300 |
| 2013 | May | 400 |
| 2013 | Feb | 100 |
| 2012 | Nov | 200 |
| 2012 | May | 250 |
| 2012 | Jan | 100 |
| 2011 | Oct | 100 |
| 2011 | May | 215 |
| 2011 | Feb | 115 |
| 2010 | May | 100 |
| 2010 | Jan | 75 |
| 2009 | May | 118 |
| 2009 | Jan | 103 |
| 2008 | May | 54 |
| 2008 | Jan | 231 |
| 2007 | Oct | 100 |
| 2007 | Jun | 85 |
| 2007 | Jan | 190 |
| 2006 | Oct | 77 |
| 2006 | May | 84 |
| 2006 | Jan | 115 |
| 2005 | Oct | 77 |
| 2005 | May | 76 |
| 2005 | Jan | 39 |
| 2004 | Jun | 35 |
| 2003 | Jun | 30 |
| 2002 | Jun | 25 |
| 2001 | May | 25 |
| 2000 | May | 25 |
| 1999 | Aug | 25 |
| 1997 | Jul | 25 |