Year Number 2005 47.8048782348633 2006 31.2195129394531 2007 20.8737869262695 2008 25.7281551361084 2009 27.2727279663086 2010 25.238094329834 2011 48.8151664733887 2012 51.6587677001953 2013 58.2938385009766 2014 56.25 2015 72.8571395874023 2016 74.7619018554688 2017 77.6190490722656 2018 64.7619018554688 2019 64.7619018554688 2020 66.1904754638672 2021 64.7619018554688 2022 64.1509399414063