Twenty-Seventh Annual
Date (of event): 1968-05-11
Sixty First
Date (of event): 1994-05-21
Sixty Second
Date (of event): 1995-05-20
Sixty Third
Date (of event): 1996-05-18
Sixty Fourth
Date (of event): 1997-05-17
Sixty Fifth
Date (of event): 1998-05-16
Sixty Sixth
Date (of event): 1999-05-22
Sixty Seventh
Date (of event): 2000-05-20
Sixty Eighth
Date (of event): 2001-05-19
Sixty Ninth
Date (of event): 2002-05-18
Seventieth
Date (of event): 2003-05-17
Seventy First
Date (of event): 2004-05-15
Seventy Second
Date (of event): 2005-05-21
Seventy Third
Date (of event): 2006-05-20
Seventy Fourth
Date (of event): 2007-05-19