Year	% gross
1971	46.6749000549316
1972	47.3769607543945
1973	47.6526908874512
1974	48.1136589050293
1975	50.4486694335938
1976	53.8820190429688
1977	58.7867012023926
1978	62.5332908630371
1979	64.7154083251953
1980	66.2885437011719
1981	65.3681030273438
1982	64.1154708862305
1983	65.821662902832
1984	66.3283767700195
1985	66.8163604736328
1986	62.8747711181641
1987	65.3483428955078
1988	65.509880065918
1989	68.984992980957
1990	71.8003082275391
1991	71.6575927734375
1992	72.7914505004883
1993	74.3324203491211
1994	75.3810119628906
1995	76.8008880615234
1996	76.2981491088867
1997	76.5228576660156
1998	76.3676910400391
1999	76.5082092285156
2001	77.2201309204102
2002	81.2801971435547
2003	82.6391525268555
2004	84.0311737060547
2005	82.600227355957
2006	80.3750915527344
2007	79.6534729003906
2008	80.5744400024414
2009	83.8893585205078
2014	86.1350021362305
2015	86.640998840332
2016	87.129997253418
2017	84.5040588378906
2018	82.0350036621094
2019	87.5709991455078
2020	89.245002746582
2021	87.1320037841797
2022	93.6650009155273