Year Number 1996 23.3695659637451 1998 22.8260860443115 2000 21.7391300201416 2002 36.7567558288574 2003 35.6756744384766 2004 41.7910461425781 2005 24.5098037719727 2006 38.7254905700684 2007 36.8932037353516 2008 46.6019401550293 2009 51.6746406555176 2010 53.1100463867188 2011 54.9763031005859 2012 56.3981056213379 2013 61.1374397277832 2014 67.788459777832 2015 66.1904754638672 2016 64.7619018554688 2017 66.1904754638672 2018 63.3333320617676 2019 62.8571434020996 2020 61.4285697937012 2021 63.3333320617676 2022 66.9811325073242