Year Number 1996 82.4120635986328 1998 87.5 2000 90.0497512817383 2002 92.0398025512695 2003 91.0447769165039 2004 91.3461532592773 2005 89.4736862182617 2006 89.4736862182617 2007 88.5167465209961 2008 88.461540222168 2009 82.4644546508789 2010 83.4123229980469 2011 83.5680770874023 2012 82.1596221923828 2013 83.5680770874023 2014 83.1730804443359 2015 81.9047622680664 2016 75.2380981445313 2017 72.8571395874023 2018 62.8571434020996 2019 61.4285697937012 2020 60.476188659668 2021 61.9047622680664 2022 60.3773574829102