Year	% gross
1971	5.0855598449707
1972	5.99380016326904
1973	7.39743995666504
1974	8.14350032806396
1975	9.73025035858154
1976	11.3309202194214
1977	12.2762098312378
1978	13.2836599349976
1981	20.8377208709717
1983	23.9667091369629
1984	24.8962306976318
1986	24.1611404418945
1989	25.7407608032227
1990	28.852180480957
1991	29.5723304748535
1992	35.7759017944336
1993	32.1077499389648
1994	39.5932197570801
1995	41.6625785827637
1996	42.6412200927734
1997	44.5536003112793
1998	47.8102493286133
1999	51.9249801635742
2000	57.4266014099121
2001	59.3491401672363
2002	67.0512771606445
2003	77.6478118896484
2004	87.3699722290039
2005	92.5811004638672
2006	95.5150604248047
2007	95.4926071166992
2008	97.2149124145508
2009	95.3111267089844
2010	100.907493591309
2011	101.638069152832
2012	102.000862121582
2013	100.533180236816
2014	102.805358886719
2015	97.9845275878906
2016	97.9824676513672
2017	94.0050888061523
2018	91.5173492431641
2019	94.9971923828125
2020	100.031951904297
2021	116.909812927246