Year % gross 1973 3.22982001304626 1977 1.81549000740051 1978 1.95902001857758 1979 2.50558996200562 1980 3.21803998947144 1981 3.07874989509583 1982 4.46152019500732 1983 5.24857997894287 1985 4.68812990188599 1986 4.86205005645752 1987 3.73640990257263 1990 5.44546985626221 1991 5.45584011077881 1992 5.5239200592041 1993 5.69229984283447 1994 5.63711977005005 1995 5.95438003540039 1999 4.16763019561768 2000 4.8468599319458 2001 5.46905994415283 2002 6.8607702255249 2004 9.06128025054932 2005 11.0168399810791 2006 13.2040195465088 2007 15.6560401916504 2008 17.8443698883057 2009 20.8574695587158 2010 23.2057094573975 2011 24.6773700714111 2012 24.6043796539307 2013 33.1546592712402 2014 32.6457481384277 2015 33.227710723877 2016 27.1310005187988 2017 35.1092910766602 2018 30.0709991455078 2019 31.6079998016357 2020 39.882999420166 2021 33.7770004272461 2022 36.8489990234375