Year % 2000 16.97 2001 11.4 2002 11.64 2003 11.98 2004 11.25 2005 11.91 2006 10.73 2007 10.61 2008 9.64 2009 10.69 2010 10.09 2011 8.96 2012 9.22 2013 9.88 2014 10.73 2015 10.64 2016 12.54 2017 13.12 2020 11.79