1982

November
December

1983

April
May
June
July
October

1984

February
June

1985

April

1986

April

1987

October
September
October
November

1988

November
May
October
November

1989

June
August

1990

February
March
May
July
October

1991

September
June
August
September
November

1992

February
March
May
June
August
October
November

1993

March
May
February
May
June
August
September

1994

October
December
September
February
March
April
June
July
December

1995

April
May
October

1996

January
April
May
July
August

1997

February
April
May
August
October

1998

August
May
July
August
October
December

1999

January
February
March
April
September
October

n/a