Year % 2001 0 2003 0 2004 0 2005 0 2006 0 2007 0 2008 0.0028072 2009 0 2010 0 2011 0 2012 0 2013 0 2014 0.1870579 2015 0.3137006 2016 0.6414495 2017 0.2910132 2019 0.1639378 2020 0.5688069 2021 0.5512294