Year	% gross
1970	45.8083686828613
1971	47.8183288574219
1972	48.7705688476562
1974	53.973518371582
1979	59.5005187988281
1980	59.0885581970215
1981	61.2372283935547
1982	60.9370918273926
1983	64.5896606445312
1984	66.6058120727539
1985	66.7690277099609
1986	70.0990829467773
1987	71.3493728637695
1988	69.404411315918
1989	68.3968963623047
1990	65.3975830078125
1991	66.9504699707031
1992	67.6964721679688
1993	66.3153228759766
1994	66.0819931030273
1995	65.7029190063477
1997	68.1618576049805
1998	78.8872985839844
1999	78.1462936401367
2000	77.2906494140625
2001	75.6534118652344
2002	74.3896713256836
2003	77.670539855957
2004	77.488151550293
2005	73.5969161987305
2006	73.3060531616211
2007	71.8341522216797
2008	72.0564804077148
2009	72.1537704467773
2010	74.2700271606445
2011	74.729850769043
2012	80.1512603759766
2013	80.0315780639648
2014	82.3287200927734
2015	80.9790496826172
2016	80.9415588378906
2017	81.3976669311523
2018	76.6084899902344
2019	77.811149597168
2020	76.1385726928711
2021	78.2559967041016
2022	82.3769989013672