Year % 2001 16.4 2002 16.41 2003 16.41 2005 14.27 2006 14.27 2007 14.19 2008 14.23 2010 12.03 2011 10.94 2012 10.94 2014 11.24 2016 11.21 2020 10.4 2021 10.55