Year % gross 1983 4.61975002288818 1989 8.51375961303711 1990 7.37123012542725 1991 8.3580904006958 2000 5.82908010482788 2002 7.75672006607056 2003 7.34869003295898 2004 8.21788024902344 2005 9.08508968353271 2006 9.93264961242676 2008 13.1974697113037 2009 13.3048601150513 2010 16.8290500640869 2011 16.5725708007812 2013 18.0413303375244 2015 15.3861799240112 2016 12.1936902999878 2017 12.0681800842285 2018 12.4969902038574 2019 13.4572296142578 2020 13.5731801986694 2021 13.5509996414185 2022 13.1829996109009