Year	% gross
1970	27.0127601623535
1971	28.4692096710205
1972	31.7253608703613
1973	33.9131088256836
1974	39.4022903442383
1975	42.2343597412109
1976	45.2245597839355
1977	47.2075805664062
1978	48.7797012329102
1979	49.5961303710938
1980	50.4552917480469
1981	51.5345611572266
1982	52.2710914611816
1983	53.4821586608887
1984	54.2639999389648
1985	54.706371307373
1986	56.3971290588379
1987	57.2347984313965
1988	58.112720489502
1989	58.8154907226562
1990	59.4815216064453
1991	60.6822204589844
1992	61.5511817932129
1993	61.9627685546875
1994	63.1155281066895
1995	64.6046524047852
1996	66.1875076293945
1997	67.4150390625
1998	69.9172210693359
1999	72.1950225830078
2000	73.9241027832031
2001	75.8198928833008
2002	88.8481369018555
2003	86.7705230712891
2004	88.6478271484375
2005	89.2180099487305
2006	84.0451736450195
2007	89.4495315551758
2008	90.8743896484375
2009	91.9062805175781
2010	92.7148284912109
2011	93.0124130249023
2012	92.1978988647461
2013	96.8812103271484
2014	96.9612503051758
2015	97.0333404541016
2016	97.8350524902344
2017	98.0744094848633
2018	99.3583679199219
2019	99.4660415649414
2020	99.0168685913086
2021	99.9292297363281
2022	99.7537536621094