Year	% gross
1971	1.45622003078461
1972	1.61217999458313
1973	1.50310003757477
1980	0.0966999977827072
1981	0.0836400017142296
1982	0.0807700008153915
1983	0.100560002028942
1984	0.173679992556572
1985	0.247219994664192
1986	0.272799998521805
1989	0.589039981365204
1990	0.619840025901794
1991	0.734990000724792
1992	0.962239980697632
1993	1.16624999046326
1994	1.3494199514389
1995	1.38877999782562
1996	1.79904997348785
1997	1.44154000282288
2000	2.31439995765686
2001	2.29325008392334
2002	2.55727005004883
2003	3.16867995262146
2004	3.18306994438171
2005	3.83043003082275
2006	6.19891977310181
2007	7.51466989517212
2008	8.69999027252197
2009	10.5778999328613
2010	12.3117904663086
2011	14.1404304504395
2015	14.645770072937
2017	13.5
2018	13.9770002365112
2019	13.539999961853
2020	14.4409999847412
2021	13.8760004043579
2022	14.9989995956421