| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 80 |
| 2025 | May | 100 |
| 2024 | May | 125 |
| 2023 | May | 75 |
| 2022 | May | 100 |
| 2022 | May | 100 |
| 2021 | Jun | 100 |
| 2021 | Jun | 100 |
| 2020 | Feb | 100 |
| 2019 | May | 100 |
| 2018 | May | 100 |
| 2017 | May | 115 |
| 2016 | May | 75 |
| 2016 | May | 25 |
| 2015 | May | 20 |
| 2014 | May | 70 |
| 2013 | May | 55 |
| 2012 | Apr | 30 |
| 2011 | Apr | 30 |
| 2010 | Apr | 30 |
| 2009 | Jun | 10 |
| 2008 | Jun | 30 |
| 2007 | Apr | 30 |
| 2006 | Apr | 30 |
| 2005 | Apr | 30 |
| 2004 | Apr | 20 |
| 2003 | Oct | 10 |
| 2003 | Apr | 20 |
| 2002 | Jun | 20 |
| 2001 | Oct | 15 |
| 2000 | Mar | 15 |
| 1999 | Sep | 13 |