Year % 2002 11.988329360447983 2003 7.1152585892189775 2004 4.55396520067948 2005 2.7930921903548254 2006 3.718265902463838 2007 7.324419666638033 2008 7.142914101750729 2009 16.58602959657675 2010 13.552100227778348 2011 9.68187218231231 2012 17.86243165580523 2013 12.000654948670237 2014 19.262494464255383 2015 12.599196576420452 2016 8.12207449365965 2017 15.318537857203735 2018 14.656113288439757 2019 8.713132532974734 2020 9.577885476583713 2021 19.596551361622303 2022 6.349165346066076 2023 12.133139209664932