Year	% gross
1978	16.542329788208
1979	38.5528984069824
1980	40.4040412902832
1981	40.3247604370117
1982	41.7668800354004
1983	41.9690284729004
1984	42.861141204834
1985	44.2679710388184
1986	43.5148696899414
1987	46.9235305786133
1988	44.0714111328125
1989	45.1002883911133
1991	46.7900505065918
1992	49.0677680969238
1993	57.3910102844238
1994	51.1404800415039
1995	52.1350288391113
1996	54.0030517578125
1997	54.7619018554688
1998	52.1108093261719
1999	52.551830291748
2000	46.9097900390625
2001	47.7242584228516
2002	53.2314987182617
2003	54.1931381225586
2004	57.6973495483398
2005	58.8258399963379
2006	57.7728385925293
2007	58.5069313049316
2008	59.7199096679688
2009	66.2777709960938
2010	67.1667098999023
2011	68.2759704589844
2012	69.6230163574219
2013	69.9463195800781
2014	70.7313232421875
2015	69.3338165283203
2016	68.4160232543945
2017	67.0270233154297
2018	64.6591567993164
2019	63.3468780517578
2020	63.4778442382813