Year	% gross
1971	3.45071005821228
1973	6.5660400390625
1974	7.74298000335693
1981	27.6374607086182
1986	36.062198638916
1987	34.9289588928223
1992	23.1289100646973
1994	24.2126808166504
1999	32.1032905578613
2002	35.702320098877
2003	39.2440795898438
2004	42.7356605529785
2013	59.0819091796875
2014	60.5502090454102
2017	57.2523612976074
2018	62.869499206543