Year Percent Change from Year Ago 1989-01-01 3.8870722119106100 1990-01-01 4.3456375223655200 1991-01-01 3.4416356717773800 1992-01-01 2.0935288991653000 1993-01-01 0.5268068556770160 1994-01-01 2.4021219815850900 1995-01-01 2.6679841987655000 1996-01-01 2.4666444345894700 1997-01-01 2.0935984357115500 1998-01-01 3.5814185867596400 1999-01-01 3.5563363774849100 2000-01-01 3.3757215852790500 2001-01-01 1.2671718143913300 2002-01-01 1.6515538752639200 2003-01-01 0.9414722333335330 2004-01-01 2.7351229130331300 2005-01-01 2.2440694841702900 2006-01-01 3.4540385578520300 2007-01-01 3.7274188041584900 2008-01-01 1.4604262062244500 2009-01-01 -3.7645797957275500 2010-01-01 1.8370962870565900 2011-01-01 2.9227961956406000 2012-01-01 0.6804423929256600 2013-01-01 0.0255047529777936 2014-01-01 0.6612713902305280 2015-01-01 1.1429781905501100 2016-01-01 2.0395750814257400 2017-01-01 2.5508821352798000