Year % 1994 51.71769 2000 0 2001 0 2002 0 2003 0 2004 0 2005 37.77751 2006 37.12903 2007 36.82286 2008 36.98214 2009 37.32436 2010 37.27214 2011 36.28724 2012 36.25965 2013 35.14643 2014 35.76852 2015 35.03759 2016 35.29675 2018 36.41481 2019 35.97249 2020 36.67268 2021 37.37747