| Year | Month | Dividend (%) |
|---|---|---|
| 2022 | Jun | 250 |
| 2022 | May | 250 |
| 2017 | Jul | 20 |
| 2016 | Aug | 100 |
| 2016 | May | 25 |
| 2016 | May | 120 |
| 2015 | May | 25 |
| 2014 | May | 30 |
| 2013 | May | 35 |
| 2012 | May | 35 |
| 2012 | Jan | 100 |
| 2011 | May | 30 |
| 2010 | May | 30 |
| 2009 | Jun | 25 |
| 2008 | Jun | 60 |
| 2007 | May | 25 |
| 2007 | Mar | 100 |
| 2006 | May | 25 |
| 2006 | Feb | 100 |
| 2005 | Jun | 20 |
| 2005 | Feb | 50 |
| 2004 | Nov | 50 |
| 2004 | May | 70 |
| 2004 | Jan | 30 |
| 2003 | Jun | 30 |
| 2002 | Jun | 35 |
| 2001 | May | 35 |
| 2000 | Aug | 35 |
| 1999 | Jul | 45 |
| 1998 | Jun | 45 |
| 1997 | May | 15 |