Year	% gross
1971	3.0003399848938
1972	3.90694999694824
1973	4.44584989547729
1974	4.74200010299683
1981	14.6849803924561
1984	17.9347801208496
1985	19.8714008331299
1989	21.7125396728516
1990	22.060359954834
1992	33.1818618774414
1999	49.8593597412109
2000	60.5915908813477
2001	58.1623191833496
2007	81.1401672363281
2009	101.277030944824
2010	93.0404434204102
2011	89.3373565673828