Year	% gross
1971	22.7974891662598
1972	20.7734107971191
1973	22.9286804199219
1974	27.2349605560303
1975	33.7894401550293
1976	45.2815399169922
1977	55.3305206298828
1978	60.7530899047852
1979	67.0154113769531
1980	78.8193435668945
1981	79.2396621704102
1982	79.9390335083008
1983	77.3849334716797
1984	79.5528106689453
1985	80.6453094482422
1986	82.8350219726562
1987	84.8367309570312
1988	87.347053527832
1989	90.7064590454102
1990	92.2248382568359
1991	92.8033981323242
1992	91.2759170532227
1993	88.2067108154297
1994	83.3896331787109
1995	79.4484634399414
1996	83.0950317382812
1997	82.6084594726562
1999	80.0192108154297
2000	82.1248626708984
2001	84.5602874755859
2002	88.7363510131836
2003	91.9045715332031
2004	91.3054275512695
2005	92.6184310913086
2006	93.4113922119141
2007	93.358772277832
2008	93.3271713256836
2009	92.1550521850586
2010	92.330940246582
2011	92.0178375244141
2012	90.6324996948242
2013	90.8741226196289
2014	96.1426010131836
2015	96.2741470336914
2016	98.0223770141602
2017	99.2762908935547
2018	100.185363769531
2019	101.089462280273
2020	102.037956237793
2021	99.6352233886719
2022	103.670539855957