Year	% gross
1970	7.80102014541626
1971	8.16839027404785
1972	8.66584968566895
1973	9.16989994049072
1974	9.75345039367676
1975	10.8341703414917
1976	12.3121204376221
1977	13.5033798217773
1978	14.5764904022217
1979	16.1843299865723
1980	17.4276790618896
1981	19.7058601379395
1982	22.5220394134521
1983	24.7425899505615
1984	27.3378200531006
1985	29.0950298309326
1986	31.4847202301025
1987	38.3773193359375
1988	38.7206802368164
1989	39.1341514587402
1990	42.8488883972168
1991	41.0207901000977
1992	43.2559394836426
1993	44.9775695800781
1994	45.7679405212402
1995	47.6459884643555
1996	49.0693397521973
1997	50.1082305908203
1998	51.6386985778809
1999	52.6480712890625
2000	53.8984603881836
2001	54.7351112365723
2002	55.2385711669922
2003	56.4975814819336
2004	57.7833213806152
2005	60.0913009643555
2006	62.4745292663574
2007	64.0726776123047
2008	66.4614715576172
2009	67.4923095703125
2010	73.0963134765625
2011	75.0358810424805
2012	76.0537109375
2013	69.9082336425781
2014	71.5456237792969
2015	72.5436096191406
2016	73.6115264892578
2017	74.8088836669922
2018	75.505989074707
2019	75.461669921875
2020	74.7959976196289