Year % 2005 19.5337773383992 2008 5.44559402433257 2009 6.05432895380949 2010 6.45344319456211 2011 6.46273486055296 2012 6.84600751136211 2013 7.17579326112522 2014 7.26746165220963 2015 7.49087863999436 2016 7.22772902801412 2017 6.46241130104379 2018 6.52009005338795 2019 6.81838827125203 2020 7.34036507017301 2021 6.92334675069107 2022 6.71877993186336