Year	% gross
1970	72.8083801269531
1971	72.6736907958984
1972	73.6859588623047
1973	75.6522979736328
1974	77.8154602050781
1975	79.7659912109375
1976	81.6570663452148
1977	83.8098983764648
1978	85.568489074707
1979	85.2958602905273
1980	89.3435516357422
1981	89.9804000854492
1982	91.1022491455078
1983	91.5997085571289
1984	92.244499206543
1985	92.0442886352539
1986	93.7305374145508
1987	94.6500625610352
1988	94.8356094360352
1989	95.2473526000977
1990	95.476448059082
1991	96.3623886108398
1992	97.3804092407227
1993	99.4402313232422
1994	100.996467590332
1995	101.456031799316
1996	101.879791259766
1997	101.860023498535
1998	101.140289306641
1999	101.408012390137
2000	101.557968139648
2001	102.117462158203
2002	102.41512298584
2003	102.503677368164
2004	101.676918029785
2005	101.915702819824
2006	101.842910766602
2007	101.950698852539
2008	102.20677947998
2009	102.287910461426
2010	102.92244720459
2011	102.492317199707
2012	102.475921630859
2013	105.539260864258
2014	105.944770812988
2015	105.661270141602
2016	105.32901763916
2017	105.433662414551
2018	104.755447387695
2019	104.755462646484
2020	104.447746276855
2021	105.070121765137
2022	105.170402526855