Year	% gross
1970	3.22213006019592
1971	3.26454997062683
1972	3.54350996017456
1973	3.89434003829956
1974	4.21263980865479
1975	4.65739011764526
1976	5.21875
1977	5.60575008392334
1978	5.98786020278931
1979	6.26506996154785
1980	6.70663022994995
1981	7.22821998596191
1982	7.59732007980347
1983	7.83086013793945
1984	8.12650966644287
1985	8.27830982208252
1986	8.45139026641846
1987	8.6200704574585
1988	9.20205974578857
1989	9.2367000579834
1990	9.5522403717041
1991	9.58102035522461
1992	10.2586002349854
1993	11.0664796829224
1994	11.6760702133179
1995	12.4320297241211
1996	13.5900497436523
1997	14.665379524231
1998	15.6186199188232
1999	16.889289855957
2000	17.3863201141357
2001	18.2983798980713
2002	19.0069808959961
2003	19.6849403381348
2004	20.8828392028809
2005	22.2404003143311
2006	23.6521091461182
2007	25.1959705352783
2008	28.4735698699951
2009	28.6965007781982
2010	30.1706199645996
2011	30.6674709320068
2012	32.5156402587891
2013	33.4278793334961
2014	35.6032104492188
2015	37.8225517272949
2016	37.8533515930176
2017	38.1584892272949
2018	39.1791305541992
2019	39.4493713378906
2020	39.6533088684082
2021	39.8545608520508
2022	40.2422294616699