| Year | Month | Dividend (%) |
|---|---|---|
| 2024 | Apr | 165 |
| 2023 | Apr | 140 |
| 2022 | Apr | 85 |
| 2021 | Apr | 50 |
| 2019 | May | 75 |
| 2018 | Apr | 75 |
| 2017 | Apr | 60 |
| 2016 | Apr | 45 |
| 2015 | Apr | 40 |
| 2014 | Apr | 35 |
| 2013 | Apr | 30 |
| 2012 | Apr | 22 |
| 2011 | Apr | 20 |
| 2010 | Apr | 18 |
| 2009 | May | 12 |
| 2008 | Jun | 6 |
| 2007 | May | 6 |
| 2005 | Jul | 18 |
| 2004 | Jun | 23 |
| 2003 | May | 14 |
| 2002 | May | 14 |
| 2001 | Jul | 13 |
| 2000 | May | 13 |
| 1999 | Jul | 13 |