Year Percent 1995 3.8045 2000 2.7749 2001 5.0914 2002 10.6267 2003 5.3525 2004 6.5628 2005 4.205 2006 3.2323 2007 4.2333 2008 7.7789 2009 9.1418 2010 8.6104 2011 3.0147 2012 3.3619 2013 3.8025 2014 3.2155 2015 7.552 2016 4.5273 2017 6.2602