Year Number 1996 86.7021255493164 1998 90.9574432373047 2000 78.3068771362305 2002 75.661376953125 2003 59.7989959716797 2004 54.8543701171875 2005 63.1067962646484 2006 62.3188400268555 2007 60.386474609375 2008 65.3846130371094 2009 54.502368927002 2010 62.5592422485352 2011 62.5592422485352 2012 63.0331764221191 2013 63.9810409545898 2014 60.476188659668 2015 58.5714302062988 2016 58.5714302062988 2017 57.6190490722656 2018 57.0754699707031 2019 58.9622650146484 2020 58.0188674926758 2021 63.6792449951172 2022 58.4905662536621