| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 550 |
| 2024 | May | 500 |
| 2023 | May | 1,550 |
| 2022 | May | 1,650 |
| 2021 | May | 1,650 |
| 2020 | May | 700 |
| 2019 | Apr | 1,400 |
| 2018 | May | 1,250 |
| 2017 | May | 1,050 |
| 2016 | Mar | 875 |
| 2015 | May | 1,000 |
| 2014 | May | 2,625 |
| 2013 | May | 875 |
| 2012 | May | 875 |
| 2011 | May | 600 |
| 2010 | May | 270 |
| 2009 | Apr | 210 |
| 2008 | Apr | 210 |
| 2007 | Apr | 25 |
| 2007 | Mar | 150 |
| 2006 | Apr | 150 |
| 2005 | Apr | 150 |
| 2004 | Apr | 150 |
| 2003 | Apr | 105 |
| 2002 | Apr | 85 |
| 2001 | May | 70 |
| 2000 | Mar | 65 |
| 1999 | May | 55 |