Year % 1993 65.27 1997 20.11 2000 28.61 2001 28.37 2002 28.12 2003 27.92 2005 18.81 2006 15.12 2007 12.64 2008 11 2009 8.23 2010 16.07 2011 13.01 2012 4 2014 3.77 2015 3.81 2016 3.79 2017 3.83 2019 3.94 2020 3.94 2021 5.48