Year	% gross
1971	73.2415084838867
1974	73.6803665161133
1975	75.4813995361328
1976	81.7862777709961
1977	80.2443771362305
1978	75.7267837524414
1979	66.6233062744141
1980	64.6045532226563
1981	64.1745910644531
1982	65.5100402832031
1983	68.2171096801758
1984	69.5204086303711
1985	71.5623016357422
1986	73.6496887207031
1987	73.3387832641602
1988	71.2973785400391
1989	71.13671875
1990	70.9356689453125
1991	70.3616409301758
1992	70.507682800293
1993	71.033073425293
1994	72.5489120483398
2001	104.745880126953
2002	102.434471130371
2003	83.0997314453125
2004	84.41845703125
2005	86.8860397338867
2006	81.9133377075195
2007	80.9419097900391
2008	80.5670394897461
2009	80.5068283081055
2010	77.6478424072266
2013	107.538269042969
2014	112.046913146973
2015	122.12467956543
2016	163.338912963867
2017	161.190963745117
2018	161.900756835938
2019	162.652648925781
2020	156.919677734375