Year Number 2004 58.6206893920898 2005 60.9756088256836 2006 40.4878044128418 2007 43.6893196105957 2008 43.2038841247559 2009 44.4976081848145 2010 42.8571434020996 2011 43.1279602050781 2012 42.6540298461914 2013 41.7061614990234 2014 69.2307662963867 2015 65.7142868041992 2016 65.7142868041992 2017 81.9047622680664 2018 82.8571395874023 2019 82.8571395874023 2020 73.8095245361328 2021 70 2022 68.3962249755859