| Year | Month | Dividend (%) |
|---|---|---|
| 2024 | Jan | 100 |
| 2023 | Jan | 100 |
| 2022 | Oct | 125 |
| 2022 | Feb | 125 |
| 2020 | Feb | 160 |
| 2019 | May | 100 |
| 2019 | Feb | 60 |
| 2018 | May | 100 |
| 2018 | Jan | 50 |
| 2017 | May | 80 |
| 2017 | Feb | 40 |
| 2016 | May | 70 |
| 2016 | Jan | 30 |
| 2015 | May | 50 |
| 2015 | Jan | 25 |
| 2014 | May | 60 |
| 2014 | Jan | 25 |
| 2013 | May | 50 |
| 2012 | Aug | 50 |
| 2012 | Jan | 30 |
| 2011 | Aug | 70 |
| 2011 | Jan | 30 |
| 2010 | Apr | 30 |
| 2010 | Jan | 20 |
| 2009 | Jul | 10 |
| 2008 | May | 30 |
| 2007 | Jun | 25 |
| 2006 | May | 20 |
| 2005 | May | 20 |
| 2004 | Jul | 20 |
| 2003 | Aug | 20 |
| 2002 | Jul | 20 |
| 2001 | Jul | 25 |
| 2000 | Apr | 25 |
| 1999 | May | 25 |
| 1998 | Aug | 25 |
| 1997 | Jul | 25 |