Year	% gross
1970	53.2174987792969
1971	54.300178527832
1972	56.4628295898438
1973	58.3308486938477
1974	62.3082008361816
1975	62.6917114257812
1976	62.668628692627
1977	67.1237182617188
1978	70.3257598876953
1979	77.3528594970703
1980	80.4749908447266
1981	84.4758224487305
1982	89.0336303710938
1983	90.1848220825195
1984	89.4798431396484
1985	87.332160949707
1986	82.2491989135742
1987	81.0121231079102
1988	78.5851135253906
1989	77.145393371582
1990	77.3763580322266
1991	77.265510559082
1992	78.4299697875977
1993	80.3245010375977
1994	80.3021697998047
1995	78.8518676757812
1996	75.2000427246094
1997	77.5988006591797
1998	79.7581100463867
1999	81.5451507568359
2000	84.0727386474609
2001	83.9519424438477
2002	83.7218170166016
2003	86.1354904174805
2004	88.3123474121094
2005	89.8288421630859
2006	88.4093017578125
2007	87.5874404907227
2008	84.072151184082
2009	84.9695892333984
2010	85.3350219726562
2011	86.2738418579102
2012	87.269401550293
2013	87.7417907714844
2014	87.4911193847656
2015	86.4806518554688
2016	87.0024871826172
2017	86.9038391113281
2018	88.2115478515625
2019	89.2110137939453
2020	89.7936630249023
2021	89.5533905029297
2022	89.5606079101562