Year	% gross
1971	26.7465190887451
1972	28.6340599060059
1973	29.0487003326416
1974	28.8285293579102
1976	30.3037891387939
1977	31.9711894989014
1978	33.6353492736816
1979	34.1795692443848
1980	34.8708801269531
1981	34.3595504760742
1982	35.4574317932129
1983	36.214469909668
1984	37.8754005432129
1986	43.2154808044434
1987	44.7609901428223
1988	46.6397514343262
1989	49.095401763916
1990	49.8229789733887
1991	51.582878112793
1992	53.2653007507324
1993	56.6757888793945
1994	58.6329002380371
1995	61.3750190734863
1997	61.3295288085938
1999	70.7686996459961
2000	74.5879898071289
2001	85.3136215209961
2002	90.1109924316406
2003	91.8227310180664
2004	88.3136901855469
2005	84.943717956543
2006	88.5527877807617
2007	90.7344512939453
2008	89.0569686889648
2009	80.1907424926758
2010	84.2024002075195
2011	87.80322265625
2012	85.0204315185547
2013	102.209701538086
2014	105.97550201416
2015	107.243186950684
2016	108.547561645508
2017	112.977333068848
2018	112.115409851074
2019	111.910400390625
2020	112.527458190918
2021	114.147331237793