Year	% gross
1970	4.30546998977661
1971	5.5403299331665
1975	5.30311012268066
1986	14.4503297805786
1990	10.8939599990845
1991	11.6520299911499
1992	12.2222204208374
1993	12.945650100708
1994	13.9428997039795
1999	20.8377990722656
2000	17.0339393615723
2001	20.7893199920654
2002	26.8457298278809
2005	26.9724006652832
2006	31.1006107330322
2007	31.7596797943115
2010	44.650390625
2011	45.5082702636719
2012	47.046459197998