Year	% gross
1971	3.5005099773407
1972	3.74236011505127
1974	3.81780004501343
1985	9.85124015808105
1987	8.78637981414795
1989	9.04685974121094
1990	10.1861400604248
1994	11.9436702728271
1995	13.5117797851562
1996	13.8641500473022
1997	14.2948904037476
1998	15.688380241394
1999	16.6050300598145
2000	17.4805297851562
2001	19.8349304199219
2002	20.6149196624756
2003	22.9185009002686
2004	23.3596000671387
2005	23.6013202667236
2006	23.8939399719238
2007	25.8544597625732
2008	30.1501007080078
2009	32.9760704040527
2010	32.1972885131836
2011	32.5170707702637
2012	31.096830368042
2013	34.4685516357422
2014	32.3022804260254
2015	31.4957599639893
2016	31.7129898071289
2017	28.023120880127
2018	26.9626693725586
2019	27.0766296386719
2021	30.0754909515381