Year % 1994 0.8967778 1999 0.3292806 2001 0 2002 0.2545981 2003 0 2004 0 2005 0 2006 0 2007 0 2008 0.5603609 2009 0 2010 0.395417 2012 0.4560874 2013 0.5367723 2014 0.5803875 2015 0.5115016 2016 0.5212185 2017 0.5679957 2018 0.8125431 2019 0.555065 2020 0.5867097 2021 0.5858348