Year % 2001 60.83667 2002 60.83667 2003 55.03679 2004 55.98935 2005 55.42002 2006 50.63922 2007 54.63189 2008 52.67683 2009 51.87258 2010 52.08701 2011 50.6758 2012 51.56545 2013 54.64094 2014 52.19677 2017 50.59371 2018 50.39738 2019 44.10551 2020 47.00423 2021 47.14526