Year	% gross
1971	5.81068992614746
1972	5.19186019897461
1973	5.33258008956909
1974	4.84794998168945
1975	5.95742988586426
1977	6.51827001571655
1979	8.24450016021729
1995	18.1031303405762
1996	18.3026695251465
1999	22.7341499328613
2000	23.6941299438477
2001	24.0311298370361
2002	24.0929393768311
2003	24.9911499023438
2004	25.8913497924805
2005	31.035400390625
2006	34.0829811096191
2007	39.9447288513184
2008	42.8119201660156
2009	44.2560005187988
2010	40.5448608398438
2011	41.8012886047363
2012	49.1220703125
2013	53.4271392822266
2014	56.996898651123
2016	64.8138122558594
2017	66.2654724121094
2018	65.4104919433594