Year	% gross
1971	86.648063659668
1972	86.3779220581055
1973	85.0395736694336
1974	91.5187683105469
1975	97.5769805908203
1976	97.4344329833984
1980	89.0591430664062
1981	83.6957473754883
1982	83.693489074707
1983	84.2751770019531
1984	90.3621063232422
1985	83.4009170532227
1986	84.8075180053711
1987	90.8494262695312
1990	81.4984664916992
1991	82.6314315795898
1992	90.978759765625
1993	91.5790100097656
1994	87.0727462768555
1995	85.9634780883789
1997	81.2892379760742
1999	75.8968811035156
2002	86.3361587524414
2004	80.6972122192383
2005	81.6555480957031
2006	82.0699996948242
2007	85.1444473266602
2008	85.3467330932617
2009	84.8786468505859
2010	85.44677734375
2011	82.0325927734375
2012	83.0308532714844
2013	74.584587097168
2014	79.0404663085938
2021	62.6166610717773