Year % 2003 2.34319465597397 2004 1.97156766439632 2005 1.19432598058677 2006 0.80588216364693 2007 0.838418571196985 2008 4.05808130517855 2009 6.25544102917719 2010 5.91968270460939 2011 4.52600160107428 2012 3.68025550193123 2013 3.03171606579417 2014 3.027064429527 2015 2.7114511435798 2016 3.44697501744778 2017 2.77879996979284 2018 2.67886834382407 2019 1.92840956509862 2020 2.26743833598589 2021 1.87663102481132 2022 1.51454798632002