Year	% gross
1970	72.3108291625977
1971	76.6228713989258
1972	82.0800628662109
1973	86.040168762207
1974	88.4639129638672
1975	89.0836563110352
1976	92.5032196044922
1977	92.641357421875
1978	80.984619140625
1979	82.4173202514648
1980	92.7899322509766
1981	93.8315734863281
1982	93.5687713623047
1983	93.5217208862305
1984	95.5677719116211
1985	92.4740295410156
1986	93.7567825317383
1987	99.0942687988281
1988	93.8183135986328
1989	90.8954391479492
1990	91.0089492797852
1991	92.3604202270508
1992	93.7527008056641
1994	96.0980606079102
1995	102.950500488281
1996	94.5284118652344
1997	92.3992919921875
1998	92.2603378295898
1999	71.0982284545898
2000	77.6943511962891
2001	79.2545928955078
2002	83.4004592895508
2003	85.8394775390625
2004	84.4174880981445
2005	86.9514083862305
2006	87.3958511352539
2007	86.1148681640625
2008	86.9069976806641
2010	89.1707611083984
2011	88.6281890869141
2012	92.1457901000977
2013	93.7670593261719
2014	94.2495574951172
2015	93.2216567993164
2016	93.4655227661133
2017	91.9092483520508
2018	91.7218704223633
2019	91.4943466186523
2020	92.1959075927734