| 2025 | 1: April | 2: September | |
| 2024 | 1: April | 2: September | |
| 2023 | 1: April | 2: September | |
| 2022 | 1: April | 2: September | |
| 2021 | 1: April | 2: September | |
| 2020 | 1: April | 2: September | |
| 2019 | 1: April | 2: September | |
| 2018 | 1: April | 2: September | |
| 2017 | 1: April | 2: September | |
| 2016 | 1: April | 2: September | |
| 2015 | 1: April | 2: September | |
| 2014 | 1: April | 2: September | |
| 2013 | 1: April | 2: September | |
| 2012 | 1: April | 2: April | 3: August |
| 2011 | 1: April | 2: August | 3: August |
| 2010 | 1: April | 2: July | |
| 2009 | 1: March | 2: April | 3: July |
| 2008 | 1: January | ||
| 2007 | 1: January | 2: March | |
| 2006 | 1: March | 2: June | 3: September |
| 2004 | 2: September | ||
| 2003 | 1: May | 2: July | 3: December |
| 2002 | 1: April | 2: July | 3: December |
| 2001 | 1: April | 2: July | 3: December |