Year % 1993 47.03 2000 10.64 2001 10.66 2002 13.81 2003 10.63 2005 13.91 2006 13.91 2008 14.18 2009 15.61 2010 15.61 2011 15.44 2012 16.55 2013 16.35 2014 16.58 2015 16.58 2016 16.37 2018 16.48 2019 16.42 2020 16.52 2021 16.87