Year	% gross
1973	21.7385501861572
1974	25.4705200195313
1975	21.5103492736816
1976	32.3848915100098
1977	30.9562206268311
1978	30.5993900299072
1979	25.8820896148682
1980	32.3311004638672
1981	36.7853584289551
1982	47.7164688110352
1983	54.3640289306641
1984	49.9311714172363
1985	49.8380889892578
1986	50.6532211303711
1987	51.439151763916
1988	54.2464218139648
1989	57.3844413757324
1990	57.6935806274414
1991	54.4649505615234
1992	55.2286186218262
1993	57.1836395263672
1994	60.3374900817871
1995	60.7248916625977
1996	60.1727981567383
1997	57.2163314819336
1998	58.6533088684082
1999	61.1670799255371
2000	60.2437782287598
2001	59.8632202148438
2002	66.155158996582
2003	73.4932708740234
2004	78.2260665893555
2005	80.711181640625
2006	80.322868347168
2007	85.8056106567383
2009	85.3912506103516
2010	85.2951812744141
2011	85.1050720214844
2012	80.7933883666992
2013	81.4817886352539
2014	88.5307388305664
2015	80.5619735717773
2019	99.0242385864258
2020	94.2054061889648