Year % gross 1999 85.932731628418 2000 86.7549667358398 2003 96.4885101318359 2004 96.7341003417969 2005 88.4666976928711 2006 88.9724578857422 2007 90.5544509887695 2008 89.0074615478516 2009 90.2642288208008 2010 90.6531295776367 2011 91.0552215576172 2012 92.9459991455078 2013 92.3489990234375 2014 92.1220016479492 2015 91.8669967651367 2016 92.3949966430664 2017 93.181999206543 2018 94.693000793457 2019 96.5850677490234 2020 91.4789962768555 2021 87.1399993896484 2022 88.1589965820312 2023 87.9349975585938