Year Number 1996 70.7446823120117 1998 57.4468078613281 2000 73.5449752807617 2002 65.6084671020508 2003 65.3266296386719 2004 45.1456298828125 2005 47.5728149414063 2006 53.6231880187988 2007 41.5458946228027 2008 36.538459777832 2009 21.3270149230957 2010 22.274881362915 2011 30.8056869506836 2012 21.8009471893311 2013 18.0094795227051 2014 18.5714282989502 2015 21.9047622680664 2016 20 2017 16.6666660308838 2018 13.6792449951172 2019 13.6792449951172 2020 10.8490562438965 2021 11.3207550048828 2022 13.2075471878052