Year	% gross
1970	2.91744995117188
1971	2.30472993850708
1972	2.35859990119934
1973	2.19939994812012
1978	1.99863994121552
1980	6.55908012390137
1982	7.61659002304077
1983	9.7985897064209
1984	11.708740234375
1985	11.7620296478271
1986	13.4625597000122
1987	13.7542896270752
1988	13.1073999404907
1989	11.346960067749
1990	10.9778699874878
1991	11.9244699478149
1992	11.5730304718018
1993	13.991849899292
1994	17.1258506774902
1995	17.3975391387939
1996	20.3165702819824
1997	23.3654098510742
1998	25.7656192779541
1999	28.5036296844482
2000	29.9090003967285
2001	30.0144805908203
2002	32.5937690734863
2003	34.1363105773926
2004	37.3937187194824
2005	40.5182914733887
2006	53.3233299255371
2007	54.5370597839355
2008	56.079761505127
2010	54.7611083984375
2011	58.0757789611816
2012	60.5965194702148
2013	58.6793212890625
2014	62.2917404174805
2015	61.4903717041016
2016	65.3827972412109
2017	70.6715087890625
2018	69.5121078491211
2019	68.7721481323242
2020	67.7223052978516