Year % gross 2000 94.4401092529297 2001 93.900146484375 2002 97.9807815551758 2003 98.4973907470703 2004 97.8886032104492 2005 95.3425979614258 2006 94.5044784545898 2007 94.3996505737305 2008 93.5492401123047 2009 92.990852355957 2010 91.9940032958984 2011 93.5325469970703 2012 96.1862869262695 2013 98.5265274047852 2014 99.4556884765625 2015 99.4092102050781 2016 98.4232330322266 2017 99.5304489135742 2018 98.9669723510742 2019 99.23193359375 2020 99.8345031738281 2021 101.567436218262