Year Number 1996 0 1998 0 2000 0 2002 0 2003 1.62162160873413 2004 4.47761201858521 2005 1.47058820724487 2006 0 2007 0.485436886548996 2008 0.485436886548996 2009 0 2010 0.478468894958496 2011 0.473933637142181 2012 0.473933637142181 2013 0.473933637142181 2014 1.92307686805725 2015 1.42857146263123 2016 4.2857141494751 2017 3.33333325386047 2018 1.42857146263123 2019 1.42857146263123 2020 1.42857146263123 2021 0.952380955219269 2022 0