Year	% gross
1970	88.3838195800781
1971	87.1625289916992
1972	87.1355819702148
1973	89.2478408813477
1974	89.3602905273438
1975	91.7907485961914
1976	93.6350173950195
1977	94.3987808227539
1978	93.2666931152344
1979	94.0750885009766
1980	94.8491134643555
1981	96.0538024902344
1982	97.0271530151367
1983	98.1515579223633
1984	99.2243881225586
1985	100.024063110352
1986	100.62232208252
1987	99.9950408935547
1988	99.7940368652344
1989	99.1111526489258
1990	97.6367492675781
1991	96.7945709228516
1992	96.1315002441406
1993	96.2292785644531
1994	96.4643936157227
1995	96.455322265625
1996	96.1101684570312
1997	96.7067337036133
1998	96.8471832275391
1999	97.4905776977539
2000	98.411376953125
2001	98.8096389770508
2002	99.2345428466797
2003	101.009208679199
2004	101.874870300293
2005	102.249198913574
2006	102.276832580566
2007	103.239501953125
2008	103.488052368164
2009	103.31421661377
2010	102.505531311035
2011	102.300086975098
2012	102.965087890625
2013	103.294998168945
2014	101.749786376953
2015	101.338989257812
2016	102.54231262207
2017	102.147911071777
2018	99.2845764160156
2019	99.3893966674805
2020	100.012512207031
2021	100.000389099121
2022	101.57878112793