Year	% gross
1970	122.520866394043
1971	124.65608215332
1972	125.620903015137
1973	123.95938873291
1974	122.400398254395
1975	118.48787689209
1976	120.688812255859
1977	125.659118652344
1978	127.102500915527
1979	113.425308227539
1980	112.860687255859
1981	114.859832763672
1982	112.278877258301
1983	113.107292175293
1984	116.083572387695
1986	120.827682495117
1987	116.816520690918
1988	118.908737182617
1989	118.63793182373
1991	103.586738586426
1992	99.80908203125
1993	97.8905715942383
1994	96.2401275634766
1995	94.2799377441406
1996	94.9213104248047
1997	94.8687133789062
1998	98.9174728393555
1999	99.9814300537109
2000	100.499633789062
2001	99.6566314697266
2002	101.704627990723
2003	105.882347106934
2004	106.500671386719
2005	106.440856933594
2006	106.605880737305
2007	106.543190002441
2008	105.620719909668
2009	105.368698120117
2010	104.774002075195
2011	104.335998535156
2012	103.069000244141
2013	103.278999328613
2014	102.214996337891
2015	101.502998352051
2016	102.47200012207
2017	100.230003356934
2018	99.5630035400391
2019	98.2470016479492
2020	98.0260009765625