| Year | Month | Dividend (%) |
|---|---|---|
| 2022 | May | 200 |
| 2021 | May | 200 |
| 2020 | Jun | 200 |
| 2019 | May | 200 |
| 2018 | May | 250 |
| 2017 | May | 150 |
| 2016 | Mar | 100 |
| 2015 | May | 100 |
| 2014 | May | 200 |
| 2014 | Jan | 200 |
| 2013 | May | 225 |
| 2012 | Aug | 150 |
| 2011 | May | 140 |
| 2010 | Oct | 60 |
| 2010 | Apr | 140 |
| 2009 | Oct | 60 |
| 2009 | May | 100 |
| 2008 | Oct | 60 |
| 2008 | May | 100 |
| 2007 | Mar | 100 |
| 2006 | Jun | 100 |
| 2005 | Jun | 70 |
| 2004 | May | 60 |
| 2003 | Jun | 80 |
| 2002 | May | 80 |
| 2001 | Aug | 50 |
| 2000 | Mar | 60 |
| 1999 | Jun | 60 |
| 1998 | Aug | 50 |
| 1997 | Aug | 50 |