2000 |
2001 |
2002 |
| March | January | January |
| June | April | April |
| October | July | July |
| October | October | |
2003 |
2004 |
2005 |
| January | January | January |
| April | April | April |
| July | July | July |
| October | October | October |
2006 |
2007 |
2008 |
| January | January | January |
| April | July | April |
| July | October | July |
| October | October | |
2009 |
2010 |
|
| January | January | |
| April | April | |
| July | July | |
| October | ||