Year	% gross
1971	10.4794702529907
1972	11.1445198059082
1973	11.7605199813843
1974	12.7008199691772
1975	13.3727102279663
1976	14.170729637146
1977	15.9835300445557
1978	16.4863891601562
1979	17.1410503387451
1980	17.6748790740967
1981	18.169849395752
1982	18.4621601104736
1983	18.4939498901367
1984	19.1393203735352
1985	20.7071495056152
1986	21.1771907806396
1987	22.2442092895508
1988	23.0965595245361
1989	23.9461193084717
1990	25.8516693115234
1991	27.1697998046875
1992	28.7010498046875
1993	30.0844306945801
1994	31.5238609313965
1995	32.3630905151367
1996	33.3639106750488
1998	36.5177612304688
1999	37.8957290649414
2000	38.1127586364746
2001	39.2238006591797
2002	39.9602890014648
2003	43.0505409240723
2004	44.8805198669434
2005	45.2465286254883
2006	46.2847785949707
2007	47.8155517578125
2008	49.6888809204102
2009	50.3034515380859
2010	52.8040618896484
2011	53.1352806091309
2012	54.835620880127
2013	56.1812400817871
2014	58.0650596618652
2015	60.8185615539551
2016	61.1939888000488
2017	62.4597206115723
2018	64.3533935546875
2019	66.3093414306641
2020	68.0676422119141
2021	71.893928527832
2022	74.1526794433594