Past Winners 1986 to 1984 1989 to 1987 1992 to1990 1995 to 1993 1998 to 1996 2001 to 1999 2004 to 2002 2007 to 2005 2010 to 2008 2013 to 2011 2015 to 2014 2016 to 2017 winners