Year	% gross
1970	24.2150096893311
1971	26.2202606201172
1972	27.9184608459473
1973	34.4117698669434
1974	37.1344604492188
1975	38.4937896728516
1976	39.7167587280273
1977	42.2138481140137
1978	42.0851287841797
1979	43.0827293395996
1980	43.8959617614746
1981	44.7226600646973
1982	45.9177284240723
1983	48.4086494445801
1984	47.4047203063965
1985	48.5664291381836
1986	53.6986312866211
1987	54.6471900939941
1988	55.3528213500977
1989	55.8296394348145
1991	60.3400611877441
1992	67.0117416381836
1993	68.2926025390625
1995	70.3121719360352
1996	71.2117385864258
1998	78.0649108886719
1999	77.9352722167969
2000	79.0934371948242
2002	81.1554718017578
2004	86.3882904052734
2005	90.4880218505859
2006	94.4033432006836
2007	97.2881469726562
2008	98.2433624267578
2009	102.675201416016
2010	104.365089416504
2011	105.441833496094
2012	101.408042907715
2013	102.072303771973
2014	101.245910644531
2015	101.232261657715
2016	101.674926757812
2017	102.081871032715
2018	102.91561126709
2019	104.421806335449
2020	103.599342346191
2021	105.227256774902
2022	103.587738037109