| Year | Month | Dividend (%) |
|---|---|---|
| 2023 | May | 50 |
| 2022 | May | 250 |
| 2018 | May | 20 |
| 2017 | May | 125 |
| 2016 | Sep | - |
| 2016 | May | 125 |
| 2015 | May | 100 |
| 2014 | Apr | 125 |
| 2013 | May | 100 |
| 2011 | Apr | 50 |
| 2011 | Jan | 100 |
| 2010 | Apr | 25 |
| 2007 | Mar | 30 |
| 2006 | May | 30 |
| 2005 | Aug | 22 |
| 2004 | Apr | 20 |
| 2003 | Apr | 12 |
| 2002 | May | 10 |
| 2001 | May | 15 |
| 2000 | Apr | 20 |
| 1999 | Jul | 20 |
| 1998 | May | 25 |
| 1997 | Jul | 20 |