Year	% gross
1970	58.4608306884766
1975	69.4629516601562
1976	68.3540115356445
1977	72.5691528320312
1978	71.7224578857422
1979	72.8081283569336
1980	74.8408203125
1994	80.4426193237305
1995	78.6603164672852
1996	75.9557571411133
1997	80.7192687988281
1998	81.4036102294922
1999	81.7539901733398
2000	82.8590927124023
2001	84.2803268432617
2002	84.5574493408203
2003	86.5641174316406
2004	85.674560546875
2005	84.5891418457031
2006	84.8307723999023
2007	83.627197265625
2009	83.6214065551758
2010	84.9550094604492
2011	84.1237106323242
2012	83.3236236572266
2014	88.3633499145508
2015	87.6054992675781
2016	87.8749389648438