Year	% gross
1971	79.9134979248047
1972	82.3990478515625
1973	84.4587020874023
1974	86.8820495605469
1975	88.5315933227539
1976	91.7350616455078
1977	93.657470703125
1978	94.7624282836914
1979	94.4081726074219
1980	95.4976119995117
1981	95.9342727661133
1982	96.9033966064453
1983	99.1577682495117
1984	102.013160705566
1985	101.685882568359
1986	118.23657989502
1987	120.422470092773
1988	123.245010375977
1989	125.112571716309
1990	128.273956298828
1991	129.562683105469
1992	129.175354003906
1993	127.712867736816
1994	144.552719116211
1995	141.190338134766
1996	138.820556640625
1997	131.606506347656
1998	128.81037902832
1999	125.696281433105
2000	125.539619445801
2001	125.066253662109
2002	122.14900970459
2003	120.537406921387
2004	117.695869445801
2005	118.545310974121
2006	119.526138305664
2007	121.023536682129
2008	122.589881896973
2009	123.701889038086
2010	125.44140625
2011	130.773254394531
2012	112.502052307129
2015	113.545059204102
2016	112.40234375
2017	114.681411743164
2018	114.188507080078
2019	114.524787902832
2020	114.929389953613
2021	114.419288635254