Year	% gross
1971	1.51718997955322
1972	1.15936994552612
1974	1.38936996459961
1975	1.20278000831604
2001	18.346809387207
2002	20.8886909484863
2003	19.4923992156982
2004	18.5251502990723
2005	19.4312496185303
2006	20.8804702758789
2007	22.0172500610352
2008	22.9782009124756
2009	27.2835292816162
2010	26.2129993438721
2011	26.6835994720459
2012	29.7820796966553
2013	29.7329292297363
2014	29.8789291381836
2015	28.8713893890381
2016	30.2885093688965
2017	30.9094791412354
2018	30.9391994476318
2019	31.7907390594482
2020	32.7702713012695
2021	29.7305603027344
2022	30.8004302978516