Quarter	Percent, Seasonally Adjusted
1998-01-01	28.8038886626739
1998-04-01	28.9967667590683
1998-07-01	29.1944627261129
1998-10-01	29.4003493813515
1999-01-01	29.5699539504776
1999-04-01	29.6903154948388
1999-07-01	29.8643591431569
1999-10-01	29.9860043772218
2000-01-01	30.0517290987849
2000-04-01	30.4306633162174
2000-07-01	30.7256237282805
2000-10-01	31.1707647417918
2001-01-01	31.4414614427095
2001-04-01	31.5331977960014
2001-07-01	31.7798250666440
2001-10-01	31.8978013811928
2002-01-01	32.1628038286661
2002-04-01	32.1289726641149
2002-07-01	32.4068890266783
2002-10-01	32.4445716852655
2003-01-01	32.6338245820330
2003-04-01	32.8244650312240
2003-07-01	32.9590494392188
2003-10-01	32.7303616395109
2004-01-01	34.4471845354029
2004-04-01	34.4374426574527
2004-07-01	34.4562106419177
2004-10-01	34.6500367453547
2005-01-01	34.4078690439381
2005-04-01	34.2555952506990
2005-07-01	33.9922207808796
2005-10-01	34.3176079350405
2006-01-01	34.7438596204648
2006-04-01	34.9330066389778
2006-07-01	34.7716543684984
2006-10-01	34.9176396563891
2007-01-01	34.7012729561609
2007-04-01	34.8319230847236
2007-07-01	35.1940932993740
2007-10-01	35.1410786618406
2008-01-01	35.3941420457554
2008-04-01	35.4179894708035
2008-07-01	35.4722457774120
2008-10-01	35.2437593659930
2009-01-01	34.9159580520772
2009-04-01	34.8550050123432
2009-07-01	34.6097740942050
2009-10-01	34.4400059300103
2010-01-01	34.3930006232232
2010-04-01	34.5232809779244
2010-07-01	34.4752164896662
2010-10-01	34.6299404075694
2011-01-01	34.8237185453911
2011-04-01	34.6784523348713
2011-07-01	34.6272052526986
2011-10-01	34.8064637089559
2012-01-01	34.9698810356395
2012-04-01	35.1364232902043
2012-07-01	35.0378248768227
2012-10-01	34.9215953749674
2013-01-01	34.6643960751150
2013-04-01	34.4398868442867
2013-07-01	34.3944169229071
2013-10-01	34.4746169919001
2014-01-01	34.5262009336518
2014-04-01	34.4227715615420
2014-07-01	34.6391901573880
2014-10-01	34.7384411573912
2015-01-01	34.7072656869775
2015-04-01	34.6686800519727
2015-07-01	34.7155488731111
2015-10-01	34.8075808498869
2016-01-01	35.0096120967877
2016-04-01	35.3111570400091
2016-07-01	35.3765056060441
2016-10-01	35.4353165326688
2017-01-01	35.6885968199862
2017-04-01	35.7112005838901
2017-07-01	35.9470341341228
2017-10-01	36.1125577528971
2018-01-01	36.1316182138185
2018-04-01	36.5089025598502