Year	% gross
1972	12.8334903717041
1973	11.5328397750854
1974	9.335280418396
1975	10.5273504257202
1976	9.57651042938232
1977	11.230489730835
1978	10.7194299697876
1979	7.78835010528564
1980	3.99275994300842
1981	4.53480005264282
1982	4.78636980056763
1983	5.29942989349365
1984	7.07463979721069
1985	7.21512985229492
1986	7.582359790802
1987	7.4536600112915
1988	7.37415981292725
1989	8.26583957672119
1990	11.2913303375244
1991	13.4211702346802
1992	14.2052602767944
1993	17.3045291900635
1994	18.3745594024658
1995	20.4260196685791
1996	20.8435192108154
1997	20.2205390930176
1998	22.9586906433105
1999	22.0091304779053
2000	19.8372097015381
2001	22.0599803924561
2002	20.3924598693848
2003	25.2343807220459
2004	22.8710803985596
2005	27.179220199585
2006	25.8864097595215
2007	28.5557994842529
2008	27.4183597564697
2009	30.1831092834473
2010	31.298770904541
2011	33.5188789367676
2012	36.4422416687012
2013	37.8836097717285
2014	38.6369781494141
2015	39.4129981994629
2016	40.5238609313965
2017	44.3021202087402
2018	46.6963691711426
2019	48.0756607055664
2020	51.3380813598633
2021	57.2734909057617
2022	63.8041610717773