Year	% gross
1971	23.3446407318115
1972	25.6522998809814
1973	31.9886608123779
1974	32.7319602966309
1975	44.0654106140137
1981	89.5737686157227
1984	86.640380859375
1985	92.9586029052734
1986	87.0829467773438
1987	81.7354965209961
1988	82.1034393310547
1989	81.6110534667969
1990	74.5130310058594
1991	79.0978164672852
1992	89.9616470336914
1993	86.8024597167969
1994	86.1752471923828
1998	88.263427734375
1999	81.1720199584961
2000	90.4565734863281
2002	95.2876663208008
2003	92.6445465087891
2004	94.0015716552734
2007	92.6353073120117
2008	99.5056991577148
2011	100.471336364746
2013	108.658699035645
2014	107.057983398438
2017	103.039878845215
2018	105.782241821289