Year	% gross
1970	25.6628494262695
1971	31.6630001068115
1972	37.8763999938965
1973	44.0083084106445
1974	45.8597793579102
1975	46.1907501220703
1976	47.9001693725586
1977	49.1967086791992
1978	47.6650009155273
1979	43.9468116760254
1980	38.8658294677734
1981	36.3355293273926
1982	33.473949432373
1983	32.0627403259277
1984	31.9784107208252
1985	33.4943618774414
1986	34.8168601989746
1987	37.371940612793
1988	39.1338806152344
1989	40.0159301757812
1990	40.2702903747559
1991	42.2088890075684
1992	44.4548492431641
1993	46.2934989929199
1994	47.0156097412109
1995	48.9868087768555
1996	51.9135704040527
1997	54.2364616394043
1998	56.0357818603516
1999	57.5889892578125
2000	58.6294097900391
2001	60.8624305725098
2002	61.8864212036133
2003	63.3702583312988
2004	66.224006652832
2005	68.4370574951172
2006	71.0402603149414
2007	74.7837219238281
2008	77.5594787597656
2009	81.9086074829102
2010	83.8540191650391
2011	85.2219619750977
2012	85.8254470825195
2013	86.9000778198242
2014	86.2370910644531
2015	86.389762878418
2016	85.6100921630859
2017	85.716926574707
2018	86.3438110351562
2019	87.8218383789062
2020	88.6528472900391
2021	89.2841186523438
2022	89.8482131958008