Year	% gross
1971	60.3792304992676
1972	57.4896583557129
1973	56.1459007263184
1974	55.2764205932617
1975	53.0112190246582
1976	54.059139251709
1977	57.1162796020508
1978	59.3094215393066
1979	64.0164489746094
1980	67.2017974853516
1981	71.4883880615234
1982	72.6708602905273
1983	70.0351867675781
1984	69.0274124145508
1985	68.7492294311523
1986	69.8057708740234
1987	72.2995834350586
1988	74.1599426269531
1989	75.0558013916016
1990	73.5855178833008
1991	73.2631912231445
1992	74.7256011962891
1997	76.9740600585938
1998	81.6903762817383
1999	84.7568206787109
2000	97.3999099731445
2001	104.603240966797
2002	113.134078979492
2003	122.179527282715
2004	129.051040649414
2005	134.230178833008
2006	142.685165405273
2007	148.346435546875
2008	147.366500854492
2009	147.940902709961
2010	145.517105102539
2011	143.236587524414
2012	141.30029296875
2013	136.926223754883
2014	132.631134033203
2015	132.226028442383
2016	134.666259765625
2017	132.306594848633
2018	129.077774047852
2019	128.543045043945
2021	137.606185913086
2022	134.93034362793