Year	% gross
1970	23.7889194488525
1971	24.056489944458
1972	27.6826801300049
1973	27.0891399383545
1974	31.1811599731445
1975	32.7336082458496
1976	34.178279876709
1977	34.9858016967773
1978	36.2269401550293
1979	37.8894691467285
1980	33.6720581054688
1983	34.1664085388184
1984	34.2157402038574
1988	37.0494613647461
1989	37.9794502258301
1991	35.7941017150879
1992	38.3170509338379
1993	40.3285903930664
1998	52.1572113037109
1999	53.7847213745117
2000	56.0798797607422
2001	58.1618194580078
2002	61.67919921875
2003	64.685791015625
2004	68.2051162719727
2005	67.5037231445312
2006	66.4253997802734
2007	65.9173889160156
2008	64.6825408935547
2009	65.4193801879883
2010	66.9102020263672
2011	68.6630630493164
2012	69.6249465942383
2013	72.0209808349609
2014	70.9722518920898
2015	69.201301574707
2016	67.9100112915039
2017	59.8279991149902
2018	60.0200004577637
2023	62.9410018920898