Year	% gross
1971	53.925708770752
1972	54.5744705200195
1973	54.9634895324707
1974	53.2744903564453
1975	54.3483200073242
1976	54.2837905883789
1977	54.2517890930176
1978	54.6872711181641
1979	55.2612609863281
1980	56.6350784301758
1981	57.5888900756836
1982	59.3479499816895
1983	62.1446113586426
1984	65.1889266967773
1985	68.0665283203125
1986	70.5210113525391
1987	73.2295837402344
1988	73.8906021118164
1989	77.1793823242188
1990	79.8625411987305
1991	81.7898406982422
1992	75.7655563354492
1993	76.8825073242188
1994	84.6343383789062
1995	80.1818695068359
1996	81.3179397583008
1997	88.1717529296875
1999	88.9198226928711
2000	88.0730514526367
2001	87.7149429321289
2002	88.0569076538086
2003	88.4333572387695
2004	89.3556823730469
2005	88.3303985595703
2006	89.9188537597656
2007	91.1858062744141
2009	92.9235992431641
2010	92.84619140625
2011	88.4057312011719
2012	94.3602066040039
2013	94.3847274780273
2014	93.1303863525391
2016	94.8107681274414
2017	95.3583984375
2018	96.2490081787109
2019	97.6730499267578
2020	98.8153228759766
2021	99.6941223144531
2022	91.7772979736328