Year	% gross
1971	7.76422023773193
1972	8.1001501083374
1973	8.50823974609375
1974	9.25374984741211
1975	9.91069030761719
1976	11.2717800140381
1977	12.4226903915405
1978	13.4362897872925
1979	14.5824298858643
1980	15.408109664917
1981	16.3074493408203
1982	16.6289196014404
1983	16.838399887085
1984	16.5275897979736
1985	16.2367000579834
1986	17.2891292572021
1987	17.6758499145508
1988	17.2825393676758
1989	18.2516098022461
1990	18.7975196838379
1991	19.4508304595947
1992	19.175630569458
1993	19.5573196411133
1994	19.6199607849121
1995	20.8613204956055
1996	20.9860897064209
1997	21.864839553833
1998	22.3388690948486
1999	24.0684700012207
2000	25.5169906616211
2001	27.990650177002
2002	31.3067493438721
2003	34.1023483276367
2004	37.4548187255859
2005	39.3000907897949
2006	40.0101318359375
2007	42.4123802185059
2008	46.9230117797852
2009	50.8348999023438
2010	54.9455108642578
2011	58.7484016418457
2012	61.0394096374512
2013	65.18701171875
2014	66.2118301391602
2015	68.2850799560547
2016	70.4834213256836
2017	72.4327087402344
2018	62.0130004882812
2019	65.1478500366211
2020	65.5130004882812
2021	65.1377105712891
2022	65.6503601074219
2023	63.0509986877441