Year	% gross
1970	76.1551895141602
1971	76.0881805419922
1972	77.0812301635742
1973	79.3779296875
1974	80.8085021972656
1975	82.3285064697266
1976	83.3351287841797
1977	84.5567321777344
1978	85.2951431274414
1979	85.938232421875
1980	86.776741027832
1981	87.5253601074219
1982	87.6751327514648
1983	88.6110076904297
1984	89.0052185058594
1985	89.9658203125
1986	91.9299621582031
1987	93.0867462158203
1988	93.6369094848633
1989	93.9185485839844
1990	94.3286514282227
1991	94.8679122924805
1992	95.7444763183594
1993	99.0702362060547
1994	101.708160400391
1995	102.572700500488
1996	103.422500610352
1997	103.20881652832
1998	101.175918579102
1999	101.536346435547
2000	101.713638305664
2001	103.054992675781
2002	103.788909912109
2003	104.145698547363
2004	101.972152709961
2005	103.339500427246
2006	103.981910705566
2007	103.966453552246
2008	105.117469787598
2009	105.488838195801
2010	106.731781005859
2011	107.225143432617
2012	106.185470581055
2013	108.674209594727
2014	108.002861022949
2015	107.380653381348
2016	106.927742004395
2017	107.040061950684
2018	107.238349914551
2019	106.927658081055
2020	106.838676452637
2021	106.658973693848
2022	106.701499938965