Select year of Prize 1980 1981 1982 1983 1986 1984 1988 1989 1990 1991 1992 1994 1995 1996 1999 2000 2001 2002 2004 2006 2007 2008 2009 2010 2012 2013 2014 2016 2017 2018 2019 1979 1985 1993 1997 1998 2003 2005 2011 2015 1987 2020