Year	% gross
1970	42.9411201477051
1971	41.3834800720215
1972	42.3112716674805
1973	42.8543014526367
1974	43.3270416259766
1975	45.6440505981445
1976	46.8852806091309
1977	47.8486213684082
1978	48.3143081665039
1979	48.73046875
1980	49.3381805419922
1981	48.788459777832
1982	49.1602897644043
1983	49.8070793151855
1984	50.0493507385254
1985	50.5038909912109
1986	50.6422691345215
1987	50.5089797973633
1988	50.7056999206543
1989	50.5289306640625
1990	51.4653701782227
1991	52.319751739502
1992	52.7212791442871
1993	53.048511505127
1994	53.7136688232422
1995	55.0303001403809
1996	55.6918487548828
1997	56.6680793762207
1998	57.1672401428223
1999	57.2459983825684
2000	58.6222114562988
2001	59.5521697998047
2002	60.5558815002441
2003	61.3359107971191
2004	62.9512214660645
2005	63.6693115234375
2006	64.5889434814453
2007	65.7996520996094
2008	66.3843231201172
2009	67.6410980224609
2010	68.6616592407227
2011	69.2210235595703
2012	69.8197708129883
2013	70.1728134155273
2014	70.8892364501953
2015	71.2459182739258
2016	72.0353317260742
2017	72.5276718139648
2018	72.9441070556641
2019	73.6097412109375
2020	73.6718063354492
2021	73.5752029418945
2022	73.6634292602539