| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 370 |
| 2024 | May | 350 |
| 2023 | May | 350 |
| 2022 | May | 350 |
| 2021 | Jun | 350 |
| 2020 | Jun | 150 |
| 2019 | May | 300 |
| 2018 | May | 250 |
| 2017 | Aug | 100 |
| 2016 | Mar | 150 |
| 2015 | May | 140 |
| 2014 | May | 125 |
| 2013 | May | 95 |
| 2012 | May | 30 |
| 2011 | Nov | 20 |
| 2011 | May | 30 |
| 2011 | Feb | 20 |
| 2010 | Aug | 30 |
| 2009 | Jun | 20 |
| 2008 | Jun | 20 |
| 2007 | Jun | 25 |
| 2006 | Jun | 20 |
| 2005 | Jun | 20 |
| 2004 | Jun | 16 |
| 2003 | Jun | 16 |
| 2002 | Jun | 12 |
| 2001 | Jun | 12 |
| 2000 | Jun | 12 |
| 1999 | Jul | 18 |
| 1998 | Jul | 18 |
| 1997 | Jul | 18 |