Year Number 1996 90.3225784301758 1998 86.0962600708008 2000 91.4893646240234 2002 90.476188659668 2003 83.5978851318359 2004 87.6847305297852 2005 91.2195129394531 2006 91.2195129394531 2007 89.8058242797852 2008 88.3495178222656 2009 88.0382766723633 2010 89.523811340332 2011 90.0473937988281 2012 90.9952621459961 2013 90.0473937988281 2014 90.3846130371094 2015 87.1428604125977 2016 80.476188659668 2017 81.4285736083984 2018 80.9523773193359 2019 80.476188659668 2020 83.3333358764648 2021 80.9523773193359 2022 80.6603775024414