Year	% gross
1970	101.133361816406
1986	92.5491027832031
1987	91.5608367919922
1988	88.601448059082
1989	111.68879699707
1990	107.987800598145
1991	105.486320495605
1994	100.147018432617
1995	100.306373596191
1997	97.7957534790039
1998	95.7631225585938
1999	94.3996963500977
2000	88.1168212890625
2001	89.6559524536133
2002	92.1623077392578
2003	93.8239517211914
2004	95.363037109375
2005	96.1765289306641
2006	98.2394332885742
2007	101.972076416016
2008	103.886459350586
2009	105.106056213379
2010	106.288879394531
2011	106.984893798828
2012	107.649147033691
2013	107.495399475098
2014	107.849296569824
2015	108.766098022461
2016	106.734970092773
2017	103.815612792969
2018	100.64143371582
2019	100.153678894043
2020	98.3542709350586
2021	96.9314727783203