Year Number 1996 46.7741928100586 1998 48.1283416748047 2000 47.3404273986816 2002 52.3809509277344 2003 57.1428565979004 2004 46.7980308532715 2005 41.4634132385254 2006 32.6829261779785 2007 19.9029121398926 2008 21.3592224121094 2009 28.7081336975098 2010 36.6666679382324 2011 35.0710906982422 2012 27.962085723877 2013 25.1184825897217 2014 44.711540222168 2015 38.5714302062988 2016 31.4285717010498 2017 22.380952835083 2018 18.0952377319336 2019 46.6666679382324 2020 43.3333320617676 2021 41.4285697937012 2022 39.6226425170898