Year Percent 1996-01-01 1.4357100000000000 1997-01-01 3.7821300000000004 1998-01-01 3.2100299999999997 1999-01-01 1.8276400000000002 2000-01-01 1.2680400000000000 2001-01-01 1.9928200000000000 2002-01-01 0.5447710000000000 2003-01-01 -0.0051040000000000 2004-01-01 1.4268100000000001 2005-01-01 1.8051300000000000 2006-01-01 3.0446500000000000 2007-01-01 3.2485400000000000 2008-01-01 3.9183400000000000 2009-01-01 2.7679800000000000 2010-01-01 3.0853500000000000 2011-01-01 2.7145099999999998 2012-01-01 2.6787000000000000 2013-01-01 2.6163400000000000 2014-01-01 2.3502400000000003 2015-01-01 2.0312300000000000 2016-01-01 2.0253600000000000