Year % 2001 0 2002 0 2005 0 2007 0 2008 0.2118326 2009 0.0044139 2010 0.0099583 2011 0.0276914 2013 0.0082512 2015 0.0103574 2016 0.024928 2017 0.0089651 2018 0.0082568 2021 0.0101846