Year Percent Change from Year Ago 1989-01-01 4.420857473928140 1990-01-01 4.182498254086650 1991-01-01 2.439883430947580 1992-01-01 1.706612395191010 1993-01-01 1.255960153866690 1994-01-01 2.960007323285380 1995-01-01 3.116795498049210 1996-01-01 3.494143155194680 1997-01-01 4.327536965287010 1998-01-01 4.668427600298370 1999-01-01 5.032373145241060 2000-01-01 4.199320479399200 2001-01-01 2.327949597227940 2002-01-01 0.216832427806805 2003-01-01 0.157370834871351 2004-01-01 1.983026747926730 2005-01-01 2.046850215368500 2006-01-01 3.461742970774110 2007-01-01 3.772020443403000 2008-01-01 2.171887323437270 2009-01-01 -3.667206604432080 2010-01-01 1.340977600154950 2011-01-01 1.549663218487840 2012-01-01 -1.031171307027720 2013-01-01 -0.126992857672566 2014-01-01 1.424084034402790 2015-01-01 1.958275891781610 2016-01-01 2.191713719261230 2017-01-01 2.868918206120560