Year Percent 2001-01-01 1.10 2002-01-01 1.10 2003-01-01 0.59 2004-01-01 0.67 2005-01-01 0.59 2006-01-01 0.62 2007-01-01 1.82 2008-01-01 1.99 2009-01-01 1.98 2010-01-01 2.06 2011-01-01 1.90 2012-01-01 1.69 2013-01-01 1.85 2014-01-01 1.98