Year % gross 2000 100.945899963379 2001 99.3605194091797 2002 99.2232818603516 2003 99.2290191650391 2004 99.5094604492188 2005 97.1975402832031 2006 96.1186676025391 2007 93.6225509643555 2008 93.0048980712891 2009 92.7473220825195 2010 93.3463287353516 2011 93.2076263427734 2012 93.6847076416016 2013 93.8013076782227 2014 107.21053314209 2015 105.160079956055 2016 103.808692932129 2017 103.065147399902 2018 102.479751586914 2019 102.539520263672 2020 105.52458190918 2021 106.098098754883 2022 106.034278869629