Year	% gross
1976	108.215286254883
1978	103.73201751709
1979	101.597320556641
1980	98.7737197875977
1981	96.8740615844727
1982	96.4061737060547
1983	96.6350021362305
1984	97.0506286621094
1985	98.2608032226562
1986	99.3450775146484
1987	97.7543563842773
1988	98.5549621582031
1989	98.6633224487305
1990	98.623779296875
1991	99.8915176391602
1992	98.770263671875
1993	98.9917907714844
1994	100.089988708496
1995	102.294342041016
1996	105.254417419434
1997	107.476661682129
1998	107.767852783203
1999	107.373580932617
2000	107.170677185059
2001	107.290008544922
2002	104.59449005127
2003	104.987182617188
2004	104.932312011719
2005	109.61653137207
2006	108.808036804199
2007	109.219276428223
2008	109.958763122559
2009	107.00691986084
2010	107.697807312012
2011	108.972351074219
2012	109.616722106934
2013	109.760643005371
2014	113.193176269531
2015	111.507049560547
2016	109.002708435059
2017	107.080146789551
2018	104.839172363281
2019	101.364440917969
2020	97.9570236206055
2021	94.7916488647461
2022	92.6850433349609