Year	% gross
1972	5.0538501739502
1973	5.46084022521973
1974	4.65361976623535
1975	5.17628002166748
1976	5.71446990966797
1977	4.47197008132935
1978	3.81118988990784
1979	2.14789009094238
1980	1.46226000785828
1981	1.55806994438171
1982	1.38056004047394
1983	1.56992995738983
1984	2.55497002601624
1985	3.3125
1986	3.89305996894836
1987	4.13565015792847
1988	4.44575977325439
1989	5.36357021331787
1990	8.74969005584717
1991	11.0618000030518
1992	13.2042903900146
1993	17.0596294403076
1994	18.6031093597412
1995	20.2919597625732
1996	22.3131008148193
1997	23.1613998413086
1998	25.3372707366943
1999	24.9015502929688
2000	24.1169300079346
2001	28.0745296478271
2002	28.3178005218506
2003	35.1978492736816
2004	30.5835704803467
2005	37.5927581787109
2006	36.9678916931152
2007	41.2065811157227
2008	39.5072402954102
2009	41.7492980957031
2010	42.6853981018066
2011	45.6674613952637
2012	48.9565505981445
2013	50.6272201538086
2014	50.8265419006348
2015	55.2828483581543
2016	56.5817604064941
2017	62.3337516784668
2018	65.7984237670898
2019	70.1360473632812
2020	75.6929321289062
2021	90.1738815307617
2022	94.4662780761719