Year	% gross
1981	52.7451210021973
1982	55.0937118530273
1983	57.7960395812988
1984	59.0113105773926
1985	59.6221199035645
1986	57.4001884460449
1987	59.2636489868164
1988	62.6133613586426
1989	63.2446212768555
1990	63.9914588928223
1991	87.6317901611328
1992	49.4867210388184
1993	54.5111503601074
1994	58.0494003295898
1995	60.5155410766602
1996	62.3691291809082
1997	64.3629302978516
1998	64.3700103759766
1999	78.5389785766602
2000	82.4558715820313
2001	76.315788269043
2002	74.967170715332
2003	68.4456405639648
2004	78.9837493896484
2005	79.8144989013672
2006	83.1912384033203
2007	83.2344589233398
2008	86.0231704711914
2009	87.6719284057617
2010	90.2070617675781
2011	93.0411911010742
2012	95.1695404052734
2013	94.0498428344727
2014	92.7927093505859
2015	92.6961822509766
2016	93.4902420043945
2017	92.5450210571289
2018	93.050422668457
2019	93.7939910888672
2020	94.78173828125