| Year | Month | Dividend (%) |
|---|---|---|
| 2022 | May | 100 |
| 2021 | Jul | 100 |
| 2020 | Jun | 100 |
| 2019 | May | 100 |
| 2018 | May | 100 |
| 2017 | May | 110 |
| 2016 | May | 10 |
| 2016 | Mar | 90 |
| 2015 | May | 100 |
| 2014 | Jun | 100 |
| 2013 | Jul | 100 |
| 2012 | May | 60 |
| 2011 | Jun | 60 |
| 2010 | Jun | 100 |
| 2009 | Jun | 60 |
| 2008 | Jun | 35 |
| 2007 | Jun | 100 |
| 2006 | May | 100 |
| 2005 | May | 65 |
| 2004 | Dec | 35 |
| 2004 | Jun | 50 |
| 2003 | Jun | 15 |
| 2002 | Jun | 10 |
| 2001 | Jun | 10 |
| 2000 | Aug | 10 |
| 2000 | Apr | 20 |
| 1999 | Aug | 10 |
| 1998 | Aug | 10 |