Year % gross 1992 75.8602676391602 1994 63.9997901916504 2008 76.1349411010742 2009 76.0430297851563 2011 74.6937484741211 2012 76.126579284668 2013 78.9735565185547 2014 82.6670074462891 2015 85.7226104736328 2016 88.0979919433594 2017 87.7059326171875 2018 87.2468566894531 2019 86.515983581543