Year	% gross
1970	22.3374805450439
1971	22.6658496856689
1972	23.9351806640625
1973	25.2288799285889
1974	26.0670108795166
1975	27.8122997283936
1976	29.5153999328613
1977	30.3014698028564
1978	31.485969543457
1979	31.7800598144531
1980	32.6291618347168
1981	33.7356491088867
1982	34.6502418518066
1983	35.352180480957
1984	36.1697807312012
1985	37.0835494995117
1986	37.8256492614746
1987	39.0490493774414
1988	40.5598106384277
1989	42.0278816223145
1990	43.9456405639648
1991	45.572380065918
1992	48.2564506530762
1993	51.226131439209
1994	53.7983703613281
1995	56.2203903198242
1996	57.9759292602539
1997	59.3482818603516
1998	58.8611907958984
1999	60.8194885253906
2000	62.3423500061035
2001	64.6320114135742
2002	67.3573379516602
2003	69.9714889526367
2004	72.6821365356445
2005	75.0848617553711
2006	77.1480178833008
2007	78.8832626342773
2008	80.0982666015625
2009	81.3629531860352
2010	82.2190628051758
2011	83.3587188720703
2012	84.0107498168945
2013	84.6110229492188
2014	85.0846786499023
2015	85.4705810546875
2016	85.9807662963867
2017	86.5513534545898
2018	87.0149078369141
2019	88.4004974365234
2020	89.629280090332
2021	91.2626419067383
2022	91.5239791870117