Year	% gross
1970	8.11715030670166
1971	8.52752017974854
1972	9.01204967498779
1973	9.44869041442871
1974	10.0374002456665
1975	11.0787401199341
1976	12.6408395767212
1977	13.8968095779419
1978	15.0006904602051
1979	16.6091003417969
1980	17.7966594696045
1981	20.1467304229736
1982	23.0802993774414
1983	25.3522605895996
1984	27.9936695098877
1985	29.8437995910645
1986	32.2149810791016
1987	39.1510391235352
1988	39.5855102539063
1989	39.9817695617676
1990	43.3840408325195
1991	41.8924407958984
1992	44.1680603027344
1993	45.7826881408691
1994	46.6164398193359
1995	48.4889717102051
1996	50.0151481628418
1997	51.045970916748
1998	52.5498390197754
1999	53.1354789733887
2000	54.786319732666
2001	55.672550201416
2002	56.1906318664551
2003	57.1411094665527
2004	58.2805709838867
2005	60.7660102844238
2006	62.9999008178711
2007	64.7140502929688
2008	66.9566268920898
2009	68.1908111572266
2010	74.1781921386719
2011	76.6032791137695
2012	76.7468338012695
2013	71.0891265869141
2014	72.9342803955078
2015	73.6256790161133
2016	75.1648635864258
2017	76.0451583862305
2018	76.4211120605469
2019	77.0178527832031
2020	75.9148712158203