Year	% gross
1971	73.8153381347656
1972	74.6636199951172
1973	75.3463363647461
1974	79.9701614379883
1975	80.6737213134766
1976	81.421989440918
1977	82.0841598510742
1978	82.0386276245117
1979	82.2450714111328
1980	82.0271911621094
1981	82.3730163574219
1982	83.1614990234375
1983	84.0073089599609
1984	84.0360717773438
1985	84.0754470825195
1986	84.4463424682617
1987	84.3979415893555
1988	84.4793701171875
1989	85.2655868530273
1990	86.7377471923828
1991	89.2621765136719
1992	91.5781402587891
1993	100.505920410156
1994	101.269409179688
1995	101.045799255371
1996	99.6143264770508
1997	97.607307434082
1998	97.5917587280273
1999	100.418441772461
2000	101.209106445312
2001	101.244812011719
2002	102.621513366699
2003	102.160667419434
2004	104.943023681641
2005	105.705490112305
2006	98.4647674560547
2007	97.7778396606445
2008	98.8149490356445
2009	100.629089355469
2010	103.454986572266
2011	94.1591262817383
2012	92.3830718994141
2013	125.601188659668
2014	128.286331176758
2015	125.702590942383
2017	125.672149658203
2018	120.13818359375
2019	117.060470581055
2020	114.169616699219
2021	113.035621643066
2022	111.909187316895