Year Number 1996 89.361701965332 1998 82.9787216186523 2000 52.9100532531738 2002 82.539680480957 2003 71.8592987060547 2004 63.1067962646484 2005 64.0776672363281 2006 63.2850227355957 2007 66.6666641235352 2008 66.3461532592773 2009 72.0379180908203 2010 67.7725143432617 2011 63.9810409545898 2012 60.6635055541992 2013 64.4549789428711 2014 59.0476188659668 2015 61.4285697937012 2016 65.2380981445313 2017 60.9523811340332 2018 58.4905662536621 2019 77.8301849365234 2020 75.9433975219727 2021 82.5471725463867 2022 75.4716949462891