Year % 2005 14.8928467760632 2006 11.2137062334098 2007 7.51448842858048 2008 6.71462622878091 2009 8.93736962216569 2010 9.04070956501971 2011 9.52269121137581 2012 10.1123971304148 2013 10.9395684304263 2014 10.8059133941614 2015 10.3144498806433 2016 6.28661409822794 2017 6.09844460015566 2018 5.03609299230044 2019 4.62471134653538 2020 3.26129559130556 2021 3.13085707013007 2022 2.79003002094013