Year	% gross
1970	16.5020599365234
1971	16.5981597900391
1972	17.5322303771973
1973	18.732629776001
1974	19.425479888916
1975	20.3189105987549
1976	21.4928207397461
1977	22.1035594940186
1978	22.7727699279785
1979	22.7012805938721
1980	23.0939807891846
1981	23.6012802124023
1982	24.2968006134033
1983	24.7937107086182
1984	25.5171909332275
1985	26.3596496582031
1986	27.1267890930176
1987	27.6459407806396
1988	28.7446594238281
1989	30.3597106933594
1990	31.922420501709
1991	33.9978904724121
1992	36.5556106567383
1993	39.8348808288574
1994	43.3957786560059
1995	45.8879699707031
1996	48.2157897949219
1997	50.9078216552734
1998	52.9981002807617
1999	53.8385810852051
2000	55.1873397827148
2001	57.114631652832
2002	59.2527198791504
2003	61.4751892089844
2004	63.7848815917969
2005	65.5033798217773
2006	66.7830581665039
2007	67.2161712646484
2008	67.5120315551758
2009	68.4235382080078
2010	70.0098190307617
2011	71.7509231567383
2012	72.5456695556641
2013	73.3898162841797
2014	75.4697570800781
2015	77.2140502929688
2016	78.3252105712891
2017	80.1130523681641
2018	81.6656265258789
2019	83.1072082519531
2020	84.6792984008789
2021	88.2712020874023
2022	88.2941207885742