Quarter	Percent, Seasonally Adjusted
1998-04-01	6.06551475881930
1999-04-01	6.16848783926683
2000-04-01	5.00442086648983
2001-04-01	5.62931492299522
2002-04-01	5.57741659538067
2003-04-01	8.50380388841927
2004-04-01	7.70822555613037
2005-04-01	8.75543951261967
2006-04-01	7.70118733509235
2007-04-01	7.12861415752742
2008-04-01	7.01725554642564
2009-04-01	8.49133041646410
2010-01-01	8.77158922084313
2010-04-01	9.02225202540554
2010-07-01	7.83367160127624
2010-10-01	7.27118527074611
2011-01-01	7.42646581093371
2011-04-01	7.75680988464958
2011-07-01	7.65649875542170
2011-10-01	7.95358000662853
2012-01-01	7.70767048969610
2012-04-01	7.61381864629053
2012-07-01	8.45774032975509
2012-10-01	9.53767827828788
2013-01-01	8.70984600019917
2013-04-01	8.54095017106152
2013-07-01	8.50120368058510
2013-10-01	9.20305799791834
2014-01-01	9.53534860435841
2014-04-01	9.31514126689413
2014-07-01	8.57588421345586
2014-10-01	6.99744101115229
2015-01-01	7.70709646797010
2015-04-01	8.66812086254930
2015-07-01	8.86953325128513
2015-10-01	10.01760010597570
2016-01-01	9.11578039158695
2016-04-01	8.34055868700136
2016-07-01	8.79241264523147
2016-10-01	8.07961495383895
2017-01-01	8.05874361307057
2017-04-01	8.13959358319960
2017-07-01	8.51734837339524
2017-10-01	7.55551674097759
2018-01-01	8.10408209929558
2018-04-01	7.86176504360818