| Year | Month | Dividend (%) |
|---|---|---|
| 2023 | May | 50 |
| 2022 | Apr | 25 |
| 2021 | Apr | 100 |
| 2020 | May | 175 |
| 2019 | Apr | 175 |
| 2018 | Apr | 100 |
| 2017 | Apr | 38 |
| 2016 | Oct | 25 |
| 2016 | May | 50 |
| 2015 | May | 30 |
| 2014 | Apr | 15 |
| 2013 | Apr | 15 |
| 2012 | Apr | 15 |
| 2011 | Apr | 25 |
| 2010 | Apr | 25 |
| 2009 | Apr | 25 |
| 2008 | Apr | 20 |
| 2007 | Apr | 15 |
| 2006 | Apr | 10 |
| 2002 | Apr | - |
| 2001 | Jul | 45 |