| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 1,700 |
| 2024 | May | 1,400 |
| 2023 | Jul | 300 |
| 2023 | May | 1,200 |
| 2022 | May | 1,100 |
| 2021 | May | 900 |
| 2020 | Oct | 900 |
| 2020 | Jun | 400 |
| 2020 | Mar | 500 |
| 2019 | May | 900 |
| 2018 | May | 800 |
| 2017 | May | 700 |
| 2016 | May | 913 |
| 2015 | Jun | 813 |
| 2014 | May | 713 |
| 2013 | May | 617 |
| 2012 | May | 825 |
| 2011 | May | 725 |
| 2010 | May | 625 |
| 2009 | May | 525 |
| 2008 | May | 750 |
| 2007 | Jul | 100 |
| 2007 | May | 100 |
| 2007 | Mar | 550 |
| 2006 | May | 1,100 |
| 2005 | May | 875 |
| 2004 | Oct | 500 |
| 2004 | Jun | 800 |
| 2003 | May | 75 |
| 2002 | Jun | 70 |
| 2001 | May | 65 |
| 2000 | Mar | 65 |
| 1999 | May | 65 |
| 1998 | May | 65 |
| 1997 | May | 60 |