Year	% gross
1970	79.4514465332031
1971	79.4305267333984
1972	80.3256988525391
1973	81.9988098144531
1974	83.0711212158203
1975	84.628059387207
1976	85.1513214111328
1977	86.4044799804688
1978	87.0386199951172
1979	87.4399108886719
1980	87.7954177856445
1981	88.8880462646484
1982	89.5304565429688
1983	89.6519165039062
1984	89.8431701660156
1985	90.548957824707
1986	91.040657043457
1987	92.1953582763672
1988	92.6139602661133
1989	91.5156631469727
1990	91.6466827392578
1991	89.0181503295898
1992	86.9599380493164
1993	88.1014099121094
1994	89.0165023803711
1995	89.6779403686523
1996	90.6522521972656
1997	91.0413131713867
1998	89.9130477905273
1999	90.1328582763672
2000	91.7217864990234
2001	93.6023025512695
2002	95.1792831420898
2003	96.3956832885742
2004	93.8796463012695
2005	94.5417098999023
2006	95.7903518676758
2007	95.3202972412109
2008	97.6834106445312
2009	99.4507827758789
2010	99.8251266479492
2011	99.7757186889648
2012	98.8464813232422
2013	103.649200439453
2014	102.603408813477
2015	100.245079040527
2016	100.435012817383
2017	100.473770141602
2018	100.261276245117
2019	99.6977691650391
2020	100.406997680664
2021	98.6584930419922
2022	98.5679473876953