1980 |
|
|
|
August |
November |
1981 |
January |
March |
June |
September |
November |
1982 |
January |
March |
May |
September |
December | Supplement #1 | Supplement #2 |
1983 |
|
March |
May |
September |
November |
1984 |
January |
March |
May |
September |
November |
1985 |
January |
March |
May |
September |
November |
1986 |
January |
March |
May |
September |
November |
1987 |
January |
March |
May |
September |
November |
1988 |
January |
March |
May |
September |
November |
1989 |
January |
March |
May |
September |
November |
1990 |
January |
March |
May |
September |
November |
1991 |
January |
March |
May |
September |
November |
1992 |
|
March |
May |
September |
|
1993 |
November 1992/ January 1993 |
March/ April |
May |
September |
November |
1994 |
January/February |
March |
May |
September |
November |
1995 | January |
March |
|
September
|
November |
1996 |
January |
March |
May |
September | December |
1997 |
February |
April |
May |
September |
November |
1998 |
January |
March |
May |
September |
November |
1999 |
January |
March |
May |
September |
November |
2000 |
January |
March |
May |
September |
November |
2001 |
January |
March |
May |
September |
November |
2002 |
January |
March |
May |
September |
|
2003 |
January |
March |
May |
September |
November |
2004 |
January |
March |
|
September |
|
2005 |
November 2004/ January 2005 |
March |
May |
September |
November |
2006 |
January |
March |
|
May/September |
November |
2007 |
January |
March |
May |
September |
November |
2008 |
January |
March |
May |
September |
November |
2009 |
January |
March |
May |
September |
November |
2010 | January | March | May | September | November |
2011 | January |
|
|
|
|