Year	% gross
1970	77.1844177246094
1971	77.1223373413086
1972	78.6707229614258
1973	81.1543426513672
1974	81.2750015258789
1975	82.4557266235352
1976	83.1478881835938
1977	84.6357803344727
1978	83.6216506958008
1979	84.2231597900391
1980	85.7261123657227
1981	87.2085800170898
1982	88.6623382568359
1983	90.1200714111328
1984	91.3695373535156
1985	91.4414520263672
1986	91.9646301269531
1987	91.1118698120117
1988	92.0939331054688
1989	93.5076522827148
1990	92.7853622436523
1991	92.7823791503906
1992	92.6997299194336
1993	93.2083206176758
1994	93.934211730957
1995	93.4839706420898
1996	93.8370208740234
1997	93.6170501708984
1998	93.583869934082
1999	93.8281021118164
2000	94.5773010253906
2001	94.671028137207
2002	95.370361328125
2003	98.6362075805664
2004	99.945442199707
2005	101.38005065918
2006	102.143020629883
2007	103.739227294922
2008	103.836563110352
2009	103.793617248535
2010	103.947196960449
2011	103.610687255859
2012	104.459892272949
2013	105.047409057617
2014	104.018592834473
2015	104.221336364746
2016	106.523620605469
2017	105.384613037109
2018	99.6219177246094
2019	99.4558563232422
2020	100.255653381348
2021	100.101387023926
2022	102.93920135498