Year	% gross
1977	1.44941997528076
1979	1.5585800409317
1983	0.911670029163361
1984	1.75330996513367
1986	2.31747007369995
1987	3.58157992362976
1992	4.50579023361206
1993	4.7400598526001
1994	5.0138201713562
1998	7.13299989700317
1999	8.30319976806641
2000	8.76185989379883
2001	9.74182987213135
2002	9.07973003387451
2003	8.53905010223389
2004	8.52606010437012
2005	8.31480026245117
2006	8.34782028198242
2007	8.90641975402832
2008	9.09648990631104
2009	10.816309928894
2010	10.1541595458984
2011	12.3892097473145
2012	16.0899696350098
2013	17.0090103149414
2014	21.0170001983643
2015	28.871000289917
2016	26.9899997711182
2017	27.3589992523193
2018	25.1359996795654
2019	24.8129997253418
2020	26.2678203582764