Year % 1994 86.5564 1999 36.89651 2000 40.14568 2001 41.75721 2002 37.64837 2004 39.59975 2005 37.60624 2006 37.61866 2007 36.91708 2008 36.36856 2009 36.67387 2010 38.24104 2011 38.03522 2012 36.71248 2013 35.7943 2014 36.22618 2015 36.93746 2016 37.47884 2018 39.95717 2019 40.66507 2020 41.81901 2021 42.81643