Year	% gross
1970	45.9372406005859
1971	47.6640815734863
1972	50.0839385986328
1973	51.9259986877441
1974	52.8122215270996
1975	52.8269691467285
1976	53.4485511779785
1977	54.1688194274902
1978	53.4969215393066
1979	52.338249206543
1980	51.4494209289551
1981	50.7745895385742
1982	50.4615898132324
1983	50.1963081359863
1984	50.8379783630371
1985	51.4553604125977
1986	52.2475700378418
1987	53.0653686523438
1988	53.6333084106445
1989	53.8405990600586
1990	54.5009689331055
1991	55.6227111816406
1992	56.7379493713379
1993	57.9397506713867
1994	58.2825584411621
1995	58.6399803161621
1996	59.3595390319824
1997	59.9044418334961
1998	59.9471282958984
1999	60.0442886352539
2000	60.8713417053223
2001	61.8425598144531
2002	63.5401382446289
2003	63.9239501953125
2004	65.0315399169922
2005	65.8802795410156
2006	66.3156433105469
2007	67.9777984619141
2008	69.3329925537109
2009	70.1231307983398
2010	71.9104690551758
2011	73.0431671142578
2012	73.744873046875
2013	74.7184371948242
2014	75.392936706543
2015	75.4501266479492
2016	75.5395126342773
2017	75.2612075805664
2018	75.6926727294922
2019	75.9852676391602
2020	76.7572479248047
2021	77.6663589477539
2022	77.6257705688477