Year	% gross
1999	66.2289581298828
2001	71.9506683349609
2002	74.1027679443359
2003	77.6094512939453
2004	80.9370193481445
2005	83.2665176391602
2008	83.0724029541016
2010	84.017219543457
2011	87.5362396240234
2012	86.8963165283203
2013	89.3478698730469
2016	83.8951034545898