Year Number 2004 88.9423065185547 2005 100 2006 100 2007 100 2008 100 2009 100 2010 100 2011 100 2012 97.6525802612305 2013 97.6525802612305 2014 100 2015 100 2016 100 2017 100 2018 99.5145645141602 2019 100 2020 99.5169067382813 2021 95.6521759033203 2022 93.7198104858398