Quarter	Percent, Seasonally Adjusted
1999-04-01	76.0255145193121
2000-04-01	75.9855878546192
2001-04-01	76.0787992495310
2002-04-01	74.5799327892463
2003-04-01	73.8618630843341
2004-04-01	72.9702504868713
2005-04-01	72.1762536137972
2006-04-01	72.8496215860480
2007-04-01	73.5560330793775
2008-04-01	73.3318384213730
2009-04-01	72.4039337669274
2010-01-01	70.5758205238638
2010-04-01	71.0589944276487
2010-07-01	71.0397948687310
2010-10-01	70.9080057792983
2011-01-01	71.5226805345948
2011-04-01	71.2579148555459
2011-07-01	71.4754007572371
2011-10-01	71.3890664017601
2012-01-01	71.3043260851483
2012-04-01	71.3401862566835
2012-07-01	71.4749073258071
2012-10-01	71.1064029204049
2013-01-01	71.0944157959429
2013-04-01	70.7792713850561
2013-07-01	70.5245540449612
2013-10-01	70.7073148952351
2014-01-01	70.5121465517415
2014-04-01	70.7259153033594
2014-07-01	70.6004023829181
2014-10-01	70.8349470944048