Year	% gross
1970	36.223201751709
1971	37.1878509521484
1972	38.2722511291504
1975	40.1890983581543
1976	37.3552398681641
1978	45.2215805053711
1979	45.3198585510254
1980	47.8219299316406
1984	38.5686302185059
1998	74.6812286376953
1999	94.1050415039062
2000	113.00203704834
2006	90.7917785644531
2008	89.3079299926758
2009	96.6228713989258
2011	100.919219970703
2014	92.6740264892578
2015	90.1829681396484
2016	84.1511001586914
2017	79.9272994995117
2020	72.9198532104492