Year	% gross
1970	0.735090017318726
1973	14.0782604217529
1974	17.3706703186035
1975	18.5138893127441
1976	20.6065902709961
1992	12.8307600021362
1995	24.2910404205322
1996	31.8859691619873
1998	52.7458610534668
1999	49.5105209350586
2000	52.141960144043
2001	52.6585311889648
2007	46.6143989562988
2008	41.5796394348145
2009	41.598690032959
2010	35.4877815246582
2011	38.6715316772461
2012	33.3460388183594
2013	33.4774589538574
2014	33.7221717834473
2015	36.1480598449707
2016	36.1252784729004
2017	44.6661109924316
2018	48.7644309997559
2019	40.4991302490234
2021	41.425178527832