Quarter Index 2007:Q1=100, Seasonally Adjusted 2007-01-01 100.0 2007-04-01 100.5 2007-07-01 100.3 2007-10-01 100.5 2008-01-01 100.1 2008-04-01 100.3 2008-07-01 99.9 2008-10-01 99.9 2009-01-01 99.4 2009-04-01 98.5 2009-07-01 98.3 2009-10-01 98.2 2010-01-01 98.4 2010-04-01 98.1 2010-07-01 98.5 2010-10-01 98.4 2011-01-01 98.6 2011-04-01 98.1 2011-07-01 98.0 2011-10-01 98.2 2012-01-01 98.0 2012-04-01 97.8 2012-07-01 97.9 2012-10-01 98.0 2013-01-01 98.3 2013-04-01 98.4