| Year | Month | Dividend (%) |
|---|---|---|
| 2019 | May | 40 |
| 2019 | Feb | 30 |
| 2018 | Oct | 30 |
| 2018 | May | 60 |
| 2018 | May | 40 |
| 2018 | Feb | 30 |
| 2017 | Nov | 30 |
| 2017 | May | 40 |
| 2017 | Feb | 30 |
| 2016 | Nov | 30 |
| 2016 | May | 40 |
| 2016 | Feb | 30 |
| 2015 | Nov | 30 |
| 2015 | May | 40 |
| 2015 | Feb | 30 |
| 2014 | Nov | 30 |
| 2014 | May | 40 |
| 2014 | Jan | 30 |
| 2013 | Nov | 30 |
| 2013 | May | 40 |
| 2013 | Feb | 30 |
| 2012 | Nov | 30 |
| 2012 | May | 100 |
| 2011 | May | 100 |
| 2010 | May | 20 |
| 2009 | May | 20 |
| 2008 | May | 20 |