Year Percent 1996-01-01 2.7287300000000000 1997-01-01 1.4757300000000000 1998-01-01 1.9748700000000001 1999-01-01 1.6012000000000000 2000-01-01 1.3049700000000000 2001-01-01 1.3868700000000000 2002-01-01 1.6071000000000000 2003-01-01 1.7765799999999998 2004-01-01 0.0631950000000000 2005-01-01 3.1079400000000000 2006-01-01 1.6146100000000000 2007-01-01 1.3866900000000000 2008-01-01 1.1646100000000001 2009-01-01 1.1015700000000002 2010-01-01 1.1082800000000000 2011-01-01 1.1705600000000000 2012-01-01 1.1576500000000000 2013-01-01 0.9554410000000000 2014-01-01 1.0237900000000000 2015-01-01 1.0348200000000000 2016-01-01 1.1133899999999999