Year	% gross
1970	7.86499977111816
1971	8.64727020263672
1972	9.46026039123535
1973	10.549090385437
1974	11.8519601821899
1975	13.2909603118896
1976	13.7240896224976
1977	13.8235301971436
1978	14.0566596984863
1979	14.6142501831055
1980	15.0797395706177
1981	15.4569702148438
1982	15.5757904052734
1983	15.7448797225952
1984	16.1763305664062
1985	16.6382293701172
1986	17.1516494750977
1987	16.9822998046875
1988	17.4371299743652
1989	17.2487602233887
1990	16.955249786377
1991	17.1564407348633
1992	16.8880405426025
1993	16.5669002532959
1994	16.5643997192383
1995	16.7911796569824
1996	17.1360607147217
1997	17.8010692596436
1998	19.1212902069092
1999	20.006010055542
2000	20.9593391418457
2001	22.2611408233643
2002	23.7841396331787
2003	25.0347805023193
2004	26.1082801818848
2005	27.5056400299072
2006	29.7087001800537
2007	30.5199604034424
2008	32.8882217407227
2009	33.5153617858887
2010	35.2135810852051
2011	36.7861595153809
2012	38.3935089111328
2013	39.4624099731445
2014	40.9161987304688
2015	42.1421508789062
2016	43.8672904968262
2017	44.9372787475586
2018	45.3961982727051
2019	45.9776802062988
2020	46.6720008850098
2021	47.4749717712402
2022	47.5561103820801