Year	% gross
1971	21.8985691070557
1972	23.5422897338867
1973	26.172550201416
1974	28.7320804595947
1975	30.9640293121338
1976	34.4195594787598
1977	36.9859580993652
1978	38.3508491516113
1979	41.4212493896484
1980	43.9554405212402
1981	47.4624214172363
1982	52.3788185119629
1983	55.0481300354004
1984	57.0634384155273
1985	57.4042701721191
1986	58.7873115539551
1987	58.9145088195801
1988	58.6317100524902
1989	57.9944000244141
1990	56.6920013427734
1991	55.7629089355469
1992	55.768871307373
1993	56.3448104858398
1994	57.8301391601562
1995	60.0490493774414
1996	62.5155296325684
1997	64.7584991455078
1998	68.1834182739258
1999	69.9513168334961
2000	71.1195831298828
2001	72.8832092285156
2002	75.1482925415039
2003	78.5541915893555
2004	79.7827072143555
2005	80.6305389404297
2006	82.7013931274414
2007	84.0887069702148
2008	86.0763092041016
2009	85.9423217773438
2010	87.2729263305664
2011	88.3800888061523
2012	90.6936187744141
2013	93.2623062133789
2014	97.3196868896484
2015	100.982269287109
2016	102.871368408203
2017	105.11018371582
2018	105.964653015137
2019	105.515609741211
2020	102.58154296875
2021	98.3202514648438
2022	98.3576583862305