Year	% gross
1970	85.9147872924805
1971	86.1177825927734
1972	86.8126220703125
1973	87.2533874511719
1974	87.5680465698242
1975	87.7265701293945
1976	87.6033325195312
1977	87.7628021240234
1978	87.8099975585938
1979	87.8247985839844
1980	87.5289993286133
1981	87.3860321044922
1982	87.2511367797852
1983	87.0830001831055
1984	87.1380004882812
1985	87.4668579101562
1986	88.2148208618164
1987	88.2662887573242
1988	88.3690032958984
1989	88.0386199951172
1990	87.6900329589844
1991	86.6394500732422
1992	85.6353225708008
1993	84.4141006469727
1994	83.3505401611328
1995	83.9178466796875
1996	83.6831283569336
1997	83.5405502319336
1998	84.9375686645508
1999	85.8695220947266
2000	87.4340896606445
2001	90.2275924682617
2002	91.9467010498047
2003	93.4130172729492
2004	90.4666366577148
2005	88.3727493286133
2006	89.4553070068359
2007	90.2919616699219
2008	90.10546875
2009	89.034049987793
2010	90.7920837402344
2011	92.1769485473633
2012	92.3296508789062
2013	97.1965484619141
2014	98.3537979125977
2015	98.7440490722656
2016	98.9645080566406
2017	100.580703735352
2018	100.796020507812
2019	100.891090393066
2020	99.5348968505859
2021	99.4157180786133
2022	99.6333312988281