Year Number 2004 79.1044769287109 2005 70.5882339477539 2006 75.9803924560547 2007 79.6116485595703 2008 79.6116485595703 2009 80.8612442016602 2010 83.2535858154297 2011 83.8862533569336 2012 86.2559204101563 2013 86.2559204101563 2014 80.7692337036133 2015 78.5714263916016 2016 79.523811340332 2017 70.476188659668 2018 69.0476226806641 2019 67.6190490722656 2020 90 2021 86.6666641235352 2022 88.2075500488281