Year	% gross
1971	107.978439331055
1972	111.602668762207
1973	103.640571594238
1974	105.236228942871
1975	104.171890258789
1976	107.345741271973
1977	107.426078796387
1978	108.542892456055
1979	101.827766418457
1980	103.605857849121
1981	104.339958190918
1982	105.627067565918
1983	106.561088562012
1984	107.701278686523
1985	108.155891418457
1995	110.688751220703
1997	124.070121765137
2001	106.764961242676
2002	108.008750915527
2003	108.957221984863
2004	110.707801818848
2005	109.689208984375
2006	109.294868469238
2011	107.853141784668
2012	106.04167175293
2013	105.49683380127
2014	104.923240661621
2015	106.832626342773
2016	106.247001647949
2017	103.738998413086
2018	99.5839996337891
2019	97.0660018920898
2020	91.3239974975586
2021	88.2839965820312
2022	85.6490020751953