Year % 2001 10.657662307070028 2002 11.485014853824612 2003 10.158910208743498 2004 8.747136481727491 2005 11.684628044076065 2006 23.826855077042886 2007 26.947868867785346 2008 24.311429158829124 2009 25.294798431773895 2010 34.90593160678795 2011 32.55226454428563 2012 31.299848162445944 2013 45.633027522422786 2014 34.94334204607245 2015 32.337658316992034 2016 30.11127887619946 2017 25.70545859415725 2018 21.97207654447409 2019 21.54692281472338 2020 28.4298945190388 2021 26.953473905854885 2022 22.82053092674885 2023 22.449249702265774