Year	% gross
1970	105.769477844238
1971	106.752098083496
1972	106.286819458008
1973	105.710746765137
1974	106.127319335938
1975	105.472259521484
1976	105.146507263184
1977	105.946830749512
1978	105.351020812988
1979	105.662490844727
1980	105.670288085938
1981	106.280616760254
1982	106.743217468262
1984	106.12474822998
1985	107.035743713379
1986	108.8759765625
1987	109.750389099121
1988	110.309837341309
1990	107.92359161377
1991	109.312889099121
1994	111.734931945801
1996	112.24089050293
1997	109.283897399902
1998	113.895248413086
1999	116.60075378418
2000	117.281173706055
2001	117.307037353516
2002	117.299240112305
2003	114.676582336426
2004	115.667877197266
2005	114.744766235352
2006	116.316131591797
2007	117.350616455078
2008	118.43701171875
2009	118.401557922363
2010	118.234718322754
2011	117.463752746582
2012	116.51634979248
2013	114.509239196777
2014	113.961883544922
2015	113.778198242188
2016	112.944267272949
2017	111.681457519531
2018	111.545608520508
2019	111.36531829834
2020	110.617813110352
2021	110.156112670898