Year	% gross
1970	13.1386604309082
1971	13.129810333252
1972	12.9221296310425
1973	13.0216197967529
1974	13.2887802124023
1975	13.7438297271729
1976	14.3612699508667
1977	15.015700340271
1978	15.4851999282837
1979	15.9361801147461
1980	16.2114906311035
1981	16.4994602203369
1982	16.3521900177002
1983	15.9521598815918
1984	15.7421503067017
1985	15.6598997116089
1986	15.6383800506592
1987	15.50119972229
1988	15.5757102966309
1989	16.1490802764893
1990	16.1665000915527
1991	17.2782897949219
1992	17.2889709472656
1993	18.502950668335
1994	20.2361106872559
1995	21.5958194732666
1996	24.1103401184082
1997	26.3157691955566
1998	27.7255191802979
1999	31.0822505950928
2000	33.9481086730957
2001	37.5661697387695
2002	41.1489295959473
2003	43.9512100219727
2004	46.2562599182129
2005	48.5790786743164
2006	50.715690612793
2007	52.9134483337402
2008	56.1099395751953
2009	58.3086395263672
2010	58.2532615661621
2011	56.5080184936523
2012	55.1780586242676
2013	54.0180015563965
2014	53.2193412780762
2015	53.3679389953613
2016	53.0817718505859
2017	53.6407508850098
2018	53.9061698913574
2019	53.7355117797852
2020	54.8529891967773
2021	54.9855918884277
2022	55.193359375