Year	% gross
1971	52.8807792663574
1972	64.511833190918
1973	63.8796310424805
1974	66.5466918945312
1975	75.914176940918
1976	79.6446533203125
1977	78.7282562255859
1978	78.6567535400391
1979	78.8729476928711
1980	81.129638671875
1981	77.9863433837891
1982	82.1787185668945
1983	83.0695037841797
1984	84.0805892944336
1985	79.0116119384766
1986	76.5430068969727
1987	74.4101486206055
1988	75.1358413696289
1989	78.3143692016602
1990	81.7493209838867
1991	82.331169128418
1992	87.1843490600586
1993	88.4116668701172
1994	90.0647125244141
1995	89.8396224975586
1996	85.5213623046875
1997	88.0703277587891
1998	89.1528015136719
1999	90.2421493530273
2000	92.224853515625
2001	92.5470428466797
2002	91.7435684204102
2003	93.2801895141602
2004	107.427589416504
2005	104.243621826172
2006	99.0104370117188
2007	102.965148925781
2008	102.976348876953
2010	110.14778137207
2011	93.5813064575195
2012	94.5040817260742
2013	94.9331130981445
2014	94.6261215209961
2015	92.8042984008789
2016	93.8285217285156
2017	103.827690124512
2018	104.678833007812
2019	103.656677246094
2020	101.518173217773
2021	102.610389709473
2022	102.495246887207
