Year	% gross
1981	57.7089691162109
1986	67.8175735473633
1990	54.4755401611328
1991	45.7707595825195
1992	37.271068572998
1993	27.5267105102539
1994	30.9352207183838
1995	36.3978996276855
1996	42.8043212890625
1997	45.8953590393066
1998	48.7348289489746
1999	56.7725791931152
2000	62.492748260498
2001	63.8290901184082
2002	66.2101287841797
2003	78.1917724609375
2004	79.046142578125
2005	81.2622375488281
2006	82.2779769897461
2007	83.3639297485352
2008	85.5456008911133
2009	86.5837020874023
2010	84.6642837524414
2011	87.8066635131836
2012	89.6990814208984
2013	91.5211410522461
2014	93.2540664672852
2015	93.770637512207
2016	94.5242691040039
2017	95.3151779174805
2018	94.6495590209961
2019	94.617919921875
2020	94.4935302734375