Year Number 1996 4.89130449295044 1998 3.26086950302124 2000 4.34782600402832 2002 5.94594573974609 2003 7.56756734848022 2004 6.46766185760498 2005 9.80392169952393 2006 2.94117641448975 2007 2.91262125968933 2008 3.88349509239197 2009 8.13397121429443 2010 10.0478467941284 2011 8.53080558776855 2012 1.42180097103119 2013 1.42180097103119 2014 1.92307686805725 2015 1.90476191043854 2016 1.90476191043854 2017 0 2018 1.42857146263123 2019 1.42857146263123 2020 0 2021 1.42857146263123 2022 0.471698105335236