Year Number 1996 96.7741928100586 1998 96.7914428710938 2000 95.2127685546875 2002 95.2380981445313 2003 94.7089920043945 2004 94.0886688232422 2005 93.1707305908203 2006 94.634147644043 2007 93.689323425293 2008 91.7475738525391 2009 91.3875579833984 2010 91.9047622680664 2011 93.8388595581055 2012 94.3127975463867 2013 94.7867279052734 2014 91.3461532592773 2015 90 2016 80 2017 80.476188659668 2018 80.476188659668 2019 80 2020 79.523811340332 2021 80.9523773193359 2022 80.6603775024414