Year % gross 1995 4.47032022476196 1998 4.05070018768311 1999 3.33706998825073 2000 3.33756995201111 2001 3.34607005119324 2005 7.48834991455078 2006 8.10229015350342 2007 8.305100440979 2008 8.59782028198242 2009 9.49392986297607 2010 8.51138019561768 2011 10.5796098709106 2013 12.2500095367432 2014 13.7993497848511 2015 18.0223999023438 2016 28.5144805908203 2017 37.5630187988281 2018 39.6098709106445 2019 40.1499214172363