Year	% gross
1970	7.52510976791382
1971	8.23814964294434
1972	8.97811985015869
1973	10.0972003936768
1974	11.5067501068115
1975	13.0152797698975
1976	13.4850797653198
1977	13.6069402694702
1978	13.851900100708
1979	14.4415702819824
1980	14.8929004669189
1981	15.2358798980713
1982	15.2186098098755
1983	15.2869501113892
1984	15.6540203094482
1985	16.1550006866455
1986	16.5132999420166
1987	16.6434898376465
1988	16.9710502624512
1989	16.6195297241211
1990	16.2315006256104
1991	16.4240398406982
1992	16.0641403198242
1993	15.6281299591064
1994	15.6168203353882
1995	15.8047304153442
1996	16.1218204498291
1997	16.8294105529785
1998	18.2186107635498
1999	19.2921009063721
2000	20.3752002716064
2001	21.4215793609619
2002	22.6222591400146
2003	23.8157596588135
2004	25.1215190887451
2005	26.1993103027344
2006	28.6644191741943
2007	29.2689208984375
2008	31.7973194122314
2009	32.3590087890625
2010	33.7407417297363
2011	35.1405487060547
2012	36.5498199462891
2013	37.364200592041
2014	38.8113288879395
2015	40.0560493469238
2016	41.8808784484863
2017	43.082218170166
2018	43.6355094909668
2019	44.3240089416504
2020	45.1727714538574
2021	45.8872184753418
2022	45.9970092773438