Year % 2005 12.5685109343527 2006 13.1872300249818 2007 10.4360871569687 2008 13.675346678958 2009 12.309189801991 2010 14.5159542755099 2011 12.1459044470398 2012 12.0390048184338 2013 19.0704746911573 2014 7.22312243018901 2015 6.48607001106877 2016 9.32276053366426 2017 7.33747091958366 2018 3.15265862122247 2019 4.54670680816959