Year Number 1996 90.4255294799805 1998 90.9574432373047 2000 90.476188659668 2002 86.7724838256836 2003 80.9045257568359 2004 90.7766952514648 2005 82.5242691040039 2006 79.7101440429688 2007 78.7439651489258 2008 72.5961532592773 2009 69.6682434082031 2010 74.8815155029297 2011 85.3080596923828 2012 83.4123229980469 2013 67.7725143432617 2014 92.3809509277344 2015 91.9047622680664 2016 88.5714263916016 2017 76.1904754638672 2018 67.9245300292969 2019 65.5660400390625 2020 74.0566024780273 2021 78.7735824584961 2022 83.0188674926758