Year % 2001 7.87 2002 6.03 2004 3.19 2005 7.18 2006 6.27 2007 6.04 2008 6.17 2009 5.06 2010 6.58 2011 5.96 2012 10.36 2013 3.82 2014 4.54 2015 5.42 2016 6.43 2017 3.71 2018 3.19 2019 12.92 2020 4.09 2021 5.49