| 2006 | 2007 | 2008 |
| July/August | January | No January |
| September | February | February |
| October | March | March |
| November | April | No April |
| May | May | |
| June | June | |
| July/August | July/August | |
| September | September | |
| October | October | |
| November | November | |
| December |
| 2009 |
| Dec. '08 - Jan. '09 |
| February |
| March |
| April |
| May |
| June |
| July/August |
| September |
| October |
| November |
| December |