Year % 2001 12.07 2002 9.09 2004 10.89 2005 10.07 2006 9.84 2007 8.81 2008 6.91 2009 14.66 2010 4.97 2011 10.51 2012 6.35 2013 10.3 2014 10.23 2015 9.41 2016 9.95 2017 10.49 2018 11.32 2019 11.51 2020 11.02 2021 10.57