| 2007 | 2008 | 2009 |
|---|---|---|
| January | January | January |
| February | February | February |
| March | March | March |
| April | April | April |
| May | May | May |
| June | June | June |
| July | July | July |
| August | August | August |
| September | September | September |
| October | October | October |
| November | November | November |
| December | December | December |
| 2016 | 2017 | 2018 |
|---|---|---|
| January | January | January |
| February | February | February |
| March | March | March |
| April | April | April |
| May | May | May |
| June | June | June |
| June Special Meeting | July | July |
| July | August | August |
| August | September | September |
| September | October | October |
| October | November | November |
| November | December | December |
| December | ||