Year Number 2004 58.2089538574219 2005 84.8039245605469 2006 76.9607849121094 2007 72.3300933837891 2008 65.0485458374023 2009 66.5071792602539 2010 62.2009582519531 2011 62.0853080749512 2012 62.5592422485352 2013 62.5592422485352 2014 64.9038467407227 2015 63.3333320617676 2016 64.2857131958008 2017 64.2857131958008 2018 63.3333320617676 2019 62.3809509277344 2020 62.3809509277344 2021 63.8095245361328 2022 63.2075462341309