Year % gross 1971 98.9624099731445 1972 97.0675201416016 1973 92.1380386352539 1974 92.5334014892578 1975 94.2824935913086 1976 95.7510375976562 1977 97.8276214599609 1978 100.213981628418 1979 101.308822631836 1980 102.792388916016 1981 107.580467224121 1982 106.337226867676 1983 105.578903198242 1984 98.5016937255859 1985 105.612060546875 1986 104.378768920898 1990 97.7914505004883 1991 95.7642669677734 1992 96.2285919189453 1993 96.9694366455078 1994 94.1174774169922 1995 91.7171173095703 1996 93.3322525024414 1997 89.2748718261719 1998 87.2865905761719 1999 83.7050323486328 2002 82.8674697875977 2004 89.5015029907227 2005 93.8854064941406 2006 91.7428588867188 2007 95.1187591552734 2008 94.086540222168 2009 88.5955276489258 2010 85.5779190063477 2011 91.7459716796875 2012 86.7748336791992 2013 79.9269714355469 2014 80.436882019043 2021 93.8210525512695