Year % 2001 22.939009973840232 2002 22.754512692660885 2003 20.664993280739086 2004 17.305931013089566 2005 20.189601497790136 2006 14.06822265170884 2007 22.27294068349472 2008 12.924310613184028 2009 5.833621184829469 2010 7.8064919067347995 2011 18.085873307812957 2012 17.209861322993124 2013 32.48814303529316 2014 35.98377250968304 2015 33.75354256757091 2016 26.844507225194125 2017 40.37682727324828 2018 52.72270575858221 2019 55.168402550746244 2020 69.0527352665342 2021 64.54068196989365 2022 63.24246843222576