Year Number 1996 14.361701965332 1998 14.361701965332 2000 15.8730154037476 2002 6.34920644760132 2003 7.53768825531006 2004 5.82524251937866 2005 5.33980560302734 2006 2.89855074882507 2007 0.966183602809906 2008 0.961538434028625 2009 1.42180097103119 2010 0.473933637142181 2011 0.473933637142181 2012 0.947867274284363 2013 0.947867274284363 2014 3.33333325386047 2015 1.42857146263123 2016 1.42857146263123 2017 1.90476191043854 2018 2.8301887512207 2019 3.30188679695129 2020 5.18867921829224 2021 6.60377359390259 2022 6.60377359390259