Year	% gross
1970	105.081047058105
1971	107.014053344727
1972	107.307250976562
1973	108.630111694336
1974	109.040702819824
1975	108.679397583008
1976	108.689697265625
1977	111.184776306152
1978	112.83145904541
1979	116.263572692871
1980	116.590560913086
1981	116.565948486328
1982	117.346572875977
1983	116.198486328125
1984	117.728996276855
1985	116.818176269531
1986	115.682777404785
1987	114.950721740723
1988	115.979591369629
1989	113.964248657227
1990	116.390441894531
1991	113.59912109375
1992	114.281669616699
1993	114.621849060059
1994	115.136138916016
1995	115.696762084961
1996	116.617919921875
1997	115.338310241699
1998	118.418083190918
1999	119.344177246094
2000	118.493141174316
2001	117.899780273438
2002	117.965553283691
2003	116.916351318359
2004	117.081253051758
2005	116.377853393555
2006	114.148536682129
2007	115.979827880859
2008	115.609420776367
2009	115.88712310791
2010	108.962478637695
2011	108.125099182129
2012	108.100852966309
2013	108.835350036621
2014	107.815963745117
2015	106.730453491211
2016	105.975532531738
2017	105.372993469238
2018	105.089736938477
2019	104.788887023926
2020	104.05281829834
2021	103.221908569336
2022	103.66951751709