Year	% gross
1970	0
1971	0
1972	0.186660006642342
1973	0.218280002474785
1974	0.282709985971451
1975	0.42221000790596
1976	0.476330012083054
1977	0.543709993362427
1978	0.61286997795105
1979	0.715269982814789
1980	0.787850022315979
1981	0.810620009899139
1982	0.858460009098053
1983	0.965290009975433
1984	1.04789996147156
1985	1.57473003864288
1987	2.10895991325378
1991	3.29550004005432
1993	4.15095996856689
1994	4.31081008911133
1995	4.569739818573
1996	4.8685097694397
1998	5.21794986724854
1999	5.56953001022339
2000	6.26802015304565
2001	6.75169992446899
2002	7.35866022109985
2003	8.59230995178223
2004	8.56558036804199
2005	8.30381965637207
2006	8.71926975250244
2014	27.2883701324463
2015	31.3773002624512
2016	27.4829502105713
2017	26.5518493652344
2019	27.4258995056152
2020	29.3373107910156
2021	27.998119354248