Year	% gross
1970	50.0091094970703
1971	52.4325790405273
1972	54.675121307373
1973	53.1433181762695
1974	52.4294090270996
1975	53.201789855957
1976	55.8040199279785
1977	54.581729888916
1978	55.3494300842285
1979	57.118221282959
1980	59.5642204284668
1981	61.8754081726074
1982	64.8526992797852
1983	66.6934204101562
1984	64.2520523071289
1985	64.0979919433594
1986	62.2030792236328
1991	77.250732421875
1992	79.0177307128906
1993	79.0240325927734
1994	76.3011703491211
1998	68.0337371826172
1999	68.6611175537109
2000	67.8662261962891
2001	69.6482391357422
2002	71.9115295410156
2003	74.1065826416016
2004	78.3292770385742
2005	82.2528686523438
2006	87.0935897827148
2007	88.9927520751953
2008	91.6342086791992
2009	95.4912567138672
2010	97.9160385131836
2011	101.302917480469
2012	106.519752502441
2013	105.064582824707
2014	99.6279907226562
2015	107.579002380371
2016	93.4085998535156
2017	91.6632308959961
2018	91.4957733154297
2019	89.6485824584961
2020	88.4315490722656