Quarter	Percent, Seasonally Adjusted
1999-01-01	25.0492992070353
1999-04-01	23.5265109692311
1999-07-01	22.5837142372359
1999-10-01	21.9489049119429
2000-01-01	21.4424883024652
2000-04-01	20.5714260227251
2000-07-01	20.4118432987866
2000-10-01	19.3808326888742
2001-01-01	17.1284600434274
2001-04-01	17.0299703572810
2001-07-01	16.0922816959874
2001-10-01	16.4203812488826
2002-01-01	17.6520514804586
2002-04-01	17.3372018556665
2002-07-01	19.1792800258460
2002-10-01	19.8506902004062
2003-01-01	19.4370425321405
2003-04-01	19.4443157894859
2003-07-01	19.6398364186786
2003-10-01	19.4636498400469
2004-01-01	18.7475905968123
2004-04-01	19.3627993889954
2004-07-01	19.0618282000622
2004-10-01	17.8054006989861
2005-01-01	17.7538867223168
2005-04-01	17.3120516058267
2005-07-01	15.9450531605797
2005-10-01	15.8370517219128
2006-01-01	16.5687681554516
2006-04-01	15.1707724182797
2006-07-01	14.2403348477213
2006-10-01	13.9624171138928
2007-01-01	13.8974128394519
2007-04-01	14.6944232694249
2007-07-01	15.4258354001009
2007-10-01	16.9039015285975
2008-01-01	18.4366694803025
2008-04-01	21.2352910946663
2008-07-01	24.9165668657641
2008-10-01	29.9577730965248
2009-01-01	34.9312016492581
2009-04-01	39.2550030178924
2009-07-01	41.0781344255855
2009-10-01	41.3107120449008
2010-01-01	41.8117439219212
2010-04-01	42.5787081463053
2010-07-01	43.2130198327586
2010-10-01	44.8156759408847
2011-01-01	45.7864471189917
2011-04-01	47.5965253072676
2011-07-01	49.1870995915070
2011-10-01	50.1781189945043
2012-01-01	52.2120395382231
2012-04-01	53.8474228162379
2012-07-01	54.3962981865382
2012-10-01	56.1159388317851
2013-01-01	57.2333237425126
2013-04-01	55.9613635559740
2013-07-01	55.8370264655973
2013-10-01	55.8190044430009
2014-01-01	54.3262844536206
2014-04-01	53.3966649019455
2014-07-01	53.9361419824096
2014-10-01	52.0261422342461
2015-01-01	50.9158756604424
2015-04-01	49.4401852094128
2015-07-01	48.0818697154701
2015-10-01	46.1144574931917
2016-01-01	44.4487541594842
2016-04-01	45.3865471855719
2016-07-01	43.4328313814050
2016-10-01	42.8456818357054
2017-01-01	41.9159449960868
2017-04-01	40.3652471537501
2017-07-01	38.1287247960125
2017-10-01	37.8459788467554
2018-01-01	37.2064762054695
2018-04-01	35.3820654684942
2018-07-01	34.6109662386065