Year	% gross
1971	27.14328956604
1972	28.307430267334
1973	25.6878604888916
1974	27.2531299591064
1975	27.733060836792
1976	29.3525295257568
1977	30.690860748291
1978	31.3448295593262
1980	40.6394386291504
1981	42.4236717224121
1982	44.540699005127
1983	44.0760383605957
1984	46.9123497009277
1985	49.900390625
1988	46.7089881896973
1989	43.5232810974121
1990	40.9409599304199
1991	36.6234703063965
2000	59.7609901428223
2001	61.419849395752
2011	109.413230895996
2012	114.634696960449
2013	117.15746307373
2015	118.711143493652
2016	120.750869750977
2017	124.938667297363
2018	113.627830505371
2019	143.643142700195
2020	141.117706298828
2021	155.908645629883