Quarter	Percent, Seasonally Adjusted
1999-01-01	35.8968025490220
1999-04-01	34.6406203374843
1999-07-01	36.9251723694856
1999-10-01	35.3423464395468
2000-01-01	34.1161766197441
2000-04-01	36.9257848577086
2000-07-01	35.6672048764381
2000-10-01	34.6545817967051
2001-01-01	35.1607017966289
2001-04-01	34.9468258655737
2001-07-01	38.2124864494236
2001-10-01	34.4297440534679
2002-01-01	34.7485446378793
2002-04-01	35.1723601911610
2002-07-01	36.4666848106778
2002-10-01	36.2079156607365
2003-01-01	35.0952940264892
2003-04-01	35.1864237954201
2003-07-01	34.5952529708943
2003-10-01	35.6777691934385
2004-01-01	35.4912841124974
2004-04-01	35.2397901623701
2004-07-01	35.8375555783348
2004-10-01	34.4559080514148
2005-01-01	35.8297461188768
2005-04-01	34.4346878563162
2005-07-01	34.0970831844086
2005-10-01	35.4062240329782
2006-01-01	35.9734974547088
2006-04-01	34.1037704820418
2006-07-01	33.6022949679794
2006-10-01	35.0143972146275
2007-01-01	34.0875722195346
2007-04-01	34.7566541084432
2007-07-01	33.1274281869922
2007-10-01	33.5163897345506
2008-01-01	33.6903572064878
2008-04-01	32.7997734805280
2008-07-01	33.6818516868605
2008-10-01	33.1437850885470
2009-01-01	32.2511886945460
2009-04-01	33.2191064833787
2009-07-01	31.7000516623072
2009-10-01	32.6608912462019
2010-01-01	32.5651620193796
2010-04-01	32.3038832015481
2010-07-01	33.0536762829200
2010-10-01	32.0384445718654
2011-01-01	32.7831009177325
2011-04-01	31.5910846769591
2011-07-01	31.4199849183411
2011-10-01	32.1302784006584
2012-01-01	31.8485496022453
2012-04-01	31.3089563782513
2012-07-01	30.4590382936988
2012-10-01	32.2941329249308
2013-01-01	30.6801156964415
2013-04-01	32.2418908143090
2013-07-01	31.0105272262727
2013-10-01	30.0218317436295
2014-01-01	30.2040103870270
2014-04-01	30.3206823467125
2014-07-01	30.1490620510962
2014-10-01	30.1176914569636
2015-01-01	31.2509437413219
2015-04-01	29.9935016684496
2015-07-01	29.1494421172140
2015-10-01	29.6224758761090
2016-01-01	29.5136424173958
2016-04-01	29.2186613123149
2016-07-01	27.2654195993933
2016-10-01	27.8370746370504
2017-01-01	27.3764070750181
2017-04-01	27.3660487774723
2017-07-01	29.6421741867746
2017-10-01	27.9441755410201
2018-01-01	28.4037455612030
2018-04-01	29.3030805277911