Dated

Event date 25/03/1978

Event date 14/04/1979

Event date 05/04/1980

Event date 30/04/1980

Event date 02/04/1981

Event date 24/04/1982

Event date 23/04/1983

10.8cm

Event date 23/04/1983

9.0cm

Event date 21/04/1984

Event date 27/04/1985

Start date 23/08/1985

Event date 26/04/1986

Event date 25/04/1987

Event date 23/04/1988

Start date 09/06/1989

Event date 21/04/1990

Event date 27/04/1991

Start date 23/08/1991

Event date 25/04/1992

Start date 21/08/1992

Event date 24/04/1993

Start date 20/08/1993

Start date 25/01/1994

Event date 23/04/1994

Start date 14/07/1994

Event date 22/04/1995

Closing date 19/04/1996

Event date 27/04/1996

Event date 26/04/1997

Event date 25/04/1998

Event date 22/04/2000

Event date 24/05/2001

Event date 15/06/2002

Event date 01/09/2002

Start date 28/01/2003

Start date 12/07 (year not specified)

Start date 25/07 (year not specified)