| 2008 | 2007 | 2006 |
| December | January | December |
| January | February | October |
| February | March | September |
| March | April | August |
| May | July | |
| 2009 | June | June |
| March | July | May |
| June | August | April |
| September | September | March |
| December | October | February |
| November | January | |
| 2010 | December | |
| March June |