Year	% gross
1983	14.4972801208496
1984	14.3942098617554
1985	14.3441696166992
1986	14.5131998062134
1987	14.9343099594116
1988	15.158109664917
1989	15.2660903930664
1990	15.3258895874023
1991	15.198169708252
1992	15.222900390625
1993	15.0898704528809
1994	14.889479637146
1995	14.9491300582886
1996	15.2702198028564
1997	14.8042097091675
1998	14.8950004577637
1999	13.0331296920776
2000	14.2331495285034
2001	14.7365398406982
2002	15.7871904373169
2003	17.5235404968262
2004	19.0191192626953
2005	19.8331298828125
2006	21.4502696990967
2007	19.9680690765381
2008	19.5922203063965
2009	20.6875400543213
2010	21.1837100982666
2011	23.16090965271
2012	26.3100891113281
2013	29.0464897155762
2014	23.7107105255127
2015	25.5357494354248
2016	26.6627407073975
2017	27.1249504089355
2018	26.9999198913574
2019	27.3414707183838
2020	28.0687599182129