| Year | Q1 | Q2 | Q3 | Q4 |
| 2012 | January | |||
| 2011 | January | April | July | October |
| 2010 | January | April | July | October |
| 2009 | January | April | July | October |
| 2008 | January | April | July | October |
| 2007 | January | April | July | October |
| 2006 | January | April | July | October |
| 2005 | January | April | July | October |
| 2004 | January | April | July | October |
| 2003 | October | |||
| 2000 | February | May | May Special | July |
