Year	% gross
1970	2.6064600944519
1971	2.47759008407593
1972	3.25617003440857
1973	2.96364998817444
1974	3.49035000801086
1975	4.47101020812988
1976	4.70876979827881
1977	5.0410099029541
1982	9.05226039886475
1983	9.24201965332031
1984	8.4503698348999
1985	8.90993976593018
1986	8.08092021942139
1987	7.59247016906738
1990	7.4141697883606
1991	6.94937992095947
1992	7.69100999832153
1995	10.2167501449585
1997	10.7530403137207
2002	18.2141094207764
2010	17.0480003356934
2011	17.5429992675781
2012	18.1580009460449
2013	18.1019992828369
2014	18.9400005340576
2015	19.7700004577637
2016	19.4020004272461
2018	21.4669990539551
2019	19.8990001678467
2020	20.8139991760254
2021	22.4529991149902