| 1998 | pre-98 | April | June | August | October | December |
| 1999 | February | April | June | August | October | December |
| 2000 | February | April | June | August | October | December |
| 2001 | February | April | June | August | October | December |
| 2002 | February | April | June | August | October | December |
| 2003 | February | April | June | August | October | December |
| 2004 | February |