Year Percent 2001 26.88778 2002 -0.76838 2003 5.90823 2004 2.54254 2005 5.96125 2006 3.66703 2007 6.42775 2008 1.82366 2009 2.51498 2010 2.48307 2011 3.91601 2012 2.08596 2013 2.35955 2014 1.32583 2015 5.2499 2016 3.24377 2017 3.63868