Year	% gross
1978	16.5884208679199
1979	39.0501899719238
1980	40.4775581359863
1981	39.8618011474609
1982	42.0260581970215
1983	41.8994407653809
1984	42.9181709289551
1986	44.5204696655273
1987	46.8237991333008
1988	40.6217498779297
1989	45.3089904785156
1991	47.772331237793
1992	50.1012382507324
1993	57.5852317810059
1994	51.2808685302734
1995	52.2847290039063
1996	54.021541595459
1997	54.3451118469238
1998	51.9749794006348
1999	51.9267387390137
2000	46.2520713806152
2001	48.1818199157715
2002	53.6290283203125
2003	55.9836807250977
2004	58.9797706604004
2005	59.7769203186035
2006	58.611328125
2007	58.1841201782227
2008	58.9474716186523
2009	65.9733276367188
2010	67.6023712158203
2011	67.602897644043
2012	69.4407119750977
2013	68.796760559082
2014	70.2699966430664
2015	68.5918731689453
2016	67.379264831543
2017	65.7113494873047
2018	64.3141479492188
2019	63.0436782836914
2020	63.8256340026855