Year	% gross
1999	28.0273094177246
2000	34.6990585327148
2001	33.6518783569336
2002	32.5219688415527
2003	32.8912506103516
2004	33.4747085571289
2005	40.4173393249512
2006	40.9665908813477
2007	43.2360687255859
2008	43.9081993103027
2009	43.3062896728516
2010	44.2122688293457
2011	44.8318405151367
2012	44.807300567627
2013	22.9304904937744
2014	24.5552597045898
2015	24.0060195922852
2016	24.5265197753906