Year	% gross
1970	36.4043197631836
1971	35.6639709472656
1972	35.3788795471191
1973	35.1298599243164
1974	34.966381072998
1975	34.8507194519043
1976	35.0405197143555
1977	35.570240020752
1978	35.9345893859863
1979	35.9124984741211
1980	35.927619934082
1981	36.053108215332
1982	36.5133590698242
1983	37.4455718994141
1984	38.4746589660645
1985	39.5689010620117
1986	40.0273818969727
1987	39.7564811706543
1988	39.4036483764648
1989	38.7087097167969
1990	38.1484794616699
1991	37.401969909668
1992	36.1754684448242
1993	34.8181610107422
1994	34.3172416687012
1995	34.2519912719727
1996	34.6845588684082
1997	35.6495513916016
1998	37.2091903686523
1999	39.2308197021484
2000	41.8724708557129
2001	45.1135597229004
2002	48.7765312194824
2003	51.6833686828613
2004	53.2750205993652
2005	55.5614891052246
2006	57.6293182373047
2007	59.3864517211914
2008	60.568660736084
2009	61.7027015686035
2010	63.2532806396484
2011	64.5031127929688
2012	65.0019073486328
2013	66.8537826538086
2014	68.3600921630859
2015	69.8513412475586
2016	71.3933181762695
2017	73.3015594482422
2018	75.5544204711914
2019	78.0978012084961
2020	80.2840881347656
2021	83.4743194580078
2022	83.7879409790039