| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | Apr | 55 |
| 2024 | Apr | 100 |
| 2023 | Jul | 90 |
| 2022 | May | 80 |
| 2021 | May | 70 |
| 2021 | Apr | 70 |
| 2020 | Jun | 65 |
| 2020 | Apr | 65 |
| 2019 | Apr | 65 |
| 2018 | Apr | 60 |
| 2017 | Apr | 110 |
| 2016 | Mar | 105 |
| 2015 | Apr | 100 |
| 2014 | Apr | 95 |
| 2013 | Apr | 90 |
| 2012 | Apr | 85 |
| 2011 | Apr | 80 |
| 2010 | Apr | 70 |
| 2009 | Oct | 130 |
| 2008 | Apr | 130 |
| 2007 | Mar | 110 |
| 2006 | Apr | 100 |
| 2005 | Apr | 75 |
| 2004 | Apr | 53 |
| 2003 | Apr | 50 |
| 2002 | Sep | 48 |
| 2001 | Apr | 43 |
| 2000 | Mar | 40 |
| 1999 | Apr | 38 |
| 1997 | Apr | 65 |