2013: October
2005: May |  August |  November
2004: February |  May |  August |  November
2003: November
2002: February |  May |  August
2001: February |  May |  August |  November
2000: January |  May |  August |  November
1999: January |  April |  July |  October
1998:
1997: January |  May |  July |  October
1996: January |  April |  July |  October
1995: January |  April |  May |  July |  September |  October
1994: January |  February |  March |  April |  October |  November
1993: July |  August |  September |  October |  November