Year % 2001 28.585212041637448 2002 21.097642995376166 2003 21.432286212503797 2004 20.51597424933391 2005 19.432263037763665 2006 15.585933178211118 2007 19.35570520853896 2008 19.564823459506968 2009 28.206141555311227 2010 23.786126968919298 2011 27.12865011622118 2012 37.37937975736919 2013 34.30476719898576 2014 38.3783729637314 2015 38.23647447276785 2016 37.00549717985875 2017 47.05572107643251 2018 93.30146539940819 2019 77.35919464208722 2020 94.82032605710432 2021 90.25518105865685 2022 70.63653970288836