Year % 2002 7.56 2003 8.68 2005 23.98 2006 20.78 2007 13.35 2008 7.86 2009 29.81 2010 16.14 2011 10.34 2012 9.69 2013 7.17 2014 11.26 2015 7.57 2016 6.69 2018 17.14 2019 17.28 2020 26.21 2021 16.21