Year % 2001 6.08100564580522 2002 6.555525934062543 2003 10.041200636059067 2004 13.94309327262992 2005 8.466892838385162 2006 2.294856817210425 2007 8.680295973026716 2008 9.774829254736126 2009 11.130649765278074 2010 10.136422269269739 2011 22.893090688815867 2012 13.031674371232638 2013 12.965780584904058 2014 14.455124427624213 2015 14.405328517019372 2016 9.995650265838647 2017 8.49253784184795 2018 10.324294331572377 2019 14.060765001239819 2020 16.2821548578034 2021 19.97915089234339 2022 19.129344903294854 2023 11.542854062001366