Quarter	Percent, Seasonally Adjusted
1999-01-01	42.4415832759708
1999-04-01	42.7531784516538
1999-07-01	42.2973241658408
1999-10-01	42.1058669610645
2000-01-01	41.1217798716875
2000-04-01	39.7600839753706
2000-07-01	39.4336651890667
2000-10-01	38.9770795366857
2001-01-01	39.1883404931779
2001-04-01	38.7871028669378
2001-07-01	38.7860815525604
2001-10-01	38.5391298946610
2002-01-01	38.2654637089234
2002-04-01	37.9803211227293
2002-07-01	37.6306808981378
2002-10-01	36.9463863497121
2003-01-01	37.0595713210314
2003-04-01	37.1845946846320
2003-07-01	37.2380615908755
2003-10-01	37.0415350793329
2004-01-01	37.5076419507394
2004-04-01	38.0492303673437
2004-07-01	37.7221460063394
2004-10-01	37.4517747357029
2005-01-01	37.4625041903047
2005-04-01	36.8514601188446
2005-07-01	37.5043895974773
2005-10-01	36.4085419450315
2006-01-01	36.3040391979501
2006-04-01	36.5052498896947
2006-07-01	36.8096238621599
2006-10-01	37.2299319539709
2007-01-01	37.9484823828934
2007-04-01	37.2426441595130
2007-07-01	36.9564408997933
2007-10-01	36.7580500926829
2008-01-01	35.9422542595658
2008-04-01	35.1453153596489
2008-07-01	35.0917563973012
2008-10-01	35.0690480532637
2009-01-01	35.5608957387967
2009-04-01	35.8114091316664
2009-07-01	37.1380478926605
2009-10-01	37.0410258100448
2010-01-01	36.8373760005995
2010-04-01	36.1641765358354
2010-07-01	36.0060813170236
2010-10-01	36.3218646743567
2011-01-01	36.2311363054917
2011-04-01	36.4148870151629
2011-07-01	36.9597163499145
2011-10-01	36.2461175121572
2012-01-01	36.6326699697864
2012-04-01	36.0584856821689
2012-07-01	36.3178647376880
2012-10-01	36.5433450883323
2013-01-01	36.9994409793036
2013-04-01	36.9259043751596
2013-07-01	36.1296237813111
2013-10-01	36.5784123269386
2014-01-01	36.9558206423507
2014-04-01	36.0219858331769
2014-07-01	35.4143236391411
2014-10-01	34.5256606491250
2015-01-01	34.3290049049015
2015-04-01	33.8538370227192
2015-07-01	33.6010608317937
2015-10-01	33.2338520939379
2016-01-01	32.7523178171271
2016-04-01	33.2946113515504
2016-07-01	32.9462883469436
2016-10-01	33.0558054800253
2017-01-01	32.6412858882980
2017-04-01	32.1978229467493
2017-07-01	31.8797890660175
2017-10-01	31.8773026480994
2018-01-01	32.0803796381364
2018-04-01	31.5866041546990
2018-07-01	31.6262071169139