Year Percent 1996-01-01 0.89647199999999990 1997-01-01 3.14789000000000030 1998-01-01 2.73320999999999970 1999-01-01 1.84981000000000000 2000-01-01 1.79665000000000000 2001-01-01 2.16646000000000000 2002-01-01 3.13814000000000000 2003-01-01 2.86899000000000000 2004-01-01 3.39037000000000000 2005-01-01 1.63503000000000000 2006-01-01 1.55223000000000000 2007-01-01 1.11941000000000000 2008-01-01 0.87337199999999990 2009-01-01 0.36866000000000000 2010-01-01 0.49083999999999994 2011-01-01 0.80665000000000000 2012-01-01 1.19152000000000010 2013-01-01 1.03027999999999990 2014-01-01 1.49937000000000000 2015-01-01 1.59572000000000000 2016-01-01 1.80967000000000010