Year	% gross
1971	2.54352998733521
1972	2.61361002922058
1973	2.75771999359131
1976	4.56542015075684
1979	3.28331995010376
1980	3.2453498840332
1981	3.09121990203857
1982	3.33782005310059
1983	2.64383006095886
1984	2.42086005210876
1985	2.60957002639771
1986	2.7463800907135
1988	4.89415979385376
1990	6.58557987213135
1994	10.6113796234131
1995	9.44838047027588
1996	10.7197904586792
1997	11.9130897521973
2004	7.22729015350342
2005	7.07776021957397
2006	6.87366008758545
2007	7.05826997756958
2008	8.70997047424316
2009	6.53521013259888
2010	6.3297700881958
2011	6.83825016021729
2012	7.74826002120972