| 1991 | November | |||
| 1992 | March | June | September | November |
| 1993 | February | May June | September | December |
| 1994 | March | June | September | December |
| 1995 | March | June | September | December |
| 1996 | March | June | September | December |
| 1997 | March | June | September | December |
| 1998 | March | June | September | December |
| 1999 | March | June | September | December |
| 2000 | March | June | September | December |
| Next decade (2001-2010) |