| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | Apr | 75 |
| 2024 | Apr | 75 |
| 2023 | Apr | 93 |
| 2022 | Feb | 580 |
| 2021 | Feb | 140 |
| 2020 | May | 140 |
| 2019 | Feb | 140 |
| 2018 | Feb | 150 |
| 2017 | Jul | 110 |
| 2017 | Feb | 60 |
| 2016 | Jul | 110 |
| 2016 | Feb | 60 |
| 2015 | Jul | 110 |
| 2015 | Feb | 190 |
| 2014 | Jul | 150 |
| 2014 | Feb | 190 |
| 2013 | Jul | 110 |
| 2013 | Feb | 190 |
| 2012 | Jul | 110 |
| 2012 | Feb | 170 |
| 2011 | Jul | 110 |
| 2011 | Feb | 205 |
| 2010 | Jul | 100 |
| 2010 | Feb | 130 |
| 2009 | Jul | 100 |
| 2009 | Feb | 100 |
| 2008 | Jul | 100 |
| 2008 | Jan | 100 |
| 2007 | Jul | 100 |
| 2007 | Feb | 150 |
| 2006 | Jan | 80 |
| 2005 | May | 70 |
| 2004 | May | 40 |
| 2003 | May | 25 |
| 2002 | Apr | 30 |
| 2001 | Apr | 20 |
| 2000 | Jun | 10 |
| 1999 | May | 15 |
| 1998 | May | 15 |
| 1997 | Jun | 30 |