Year	% gross
1970	47.8986015319824
1971	48.2297515869141
1972	49.3353805541992
1973	50.4177589416504
1974	50.934211730957
1975	51.4947395324707
1976	52.6857681274414
1977	56.0368881225586
1978	59.527099609375
1979	63.596321105957
1980	66.9689636230469
1981	70.5596466064453
1982	73.2198104858398
1983	73.6495590209961
1984	73.7756729125977
1985	72.107177734375
1986	70.155143737793
1987	69.6017684936523
1988	67.9860076904297
1989	67.5382919311523
1990	65.9095916748047
1991	68.1660919189453
1992	68.3609771728516
1993	68.4694671630859
1994	68.4566268920898
1995	67.1926422119141
1996	64.3878784179688
1997	65.0231628417969
1998	66.1075668334961
1999	66.1257171630859
2000	68.2564163208008
2001	70.1384887695312
2002	73.2091827392578
2003	75.117431640625
2004	76.9574890136719
2005	80.5503921508789
2006	83.0087280273438
2007	83.5161895751953
2008	84.5486373901367
2009	85.4640121459961
2010	85.8742980957031
2011	87.8970336914062
2012	89.682502746582
2013	90.0739974975586
2014	89.5895309448242
2015	88.6042709350586
2016	88.3425598144531
2017	89.0511932373047
2018	90.1796798706055
2019	91.3795013427734
2020	92.5911178588867
2021	91.7847900390625
2022	91.9738693237305