Quarter	Percent, Seasonally Adjusted
1999-01-01	50.8302536380401
1999-04-01	50.3651403591324
1999-07-01	49.7297094977207
1999-10-01	48.9597294053563
2000-01-01	48.6303404666795
2000-04-01	48.1947217501877
2000-07-01	47.7662443501431
2000-10-01	47.4926426888834
2001-01-01	49.6298283798047
2001-04-01	49.5642765161446
2001-07-01	48.9049974169919
2001-10-01	48.4311130191712
2002-01-01	47.1469496127953
2002-04-01	46.3439990899289
2002-07-01	45.7842623861933
2002-10-01	45.4880007842448
2003-01-01	44.9994355197051
2003-04-01	44.5287292957210
2003-07-01	43.8144941956509
2003-10-01	43.4812505876980
2004-01-01	43.2728112901751
2004-04-01	42.9331304762058
2004-07-01	42.4073665706203
2004-10-01	41.9615223578594
2005-01-01	41.8206560378316
2005-04-01	41.0932829047550
2005-07-01	41.0871585284229
2005-10-01	40.5524994918745
2006-01-01	39.9327567129360
2006-04-01	39.4213786643789
2006-07-01	39.3061286299328
2006-10-01	38.6729652084099
2007-01-01	38.5507337622870
2007-04-01	38.3721054715683
2007-07-01	37.8299387573022
2007-10-01	37.6445743114504
2008-01-01	37.2898909539972
2008-04-01	36.7130305839238
2008-07-01	36.2704856978371
2008-10-01	35.4141206773579
2009-01-01	35.1127541324786
2009-04-01	35.0170394878372
2009-07-01	34.7142397383352
2009-10-01	34.6641976948148
2010-01-01	34.1796669515539
2010-04-01	33.9766626576430
2010-07-01	33.5258879182485
2010-10-01	33.2937537488683
2011-01-01	33.1606589782583
2011-04-01	32.5460161934601
2011-07-01	32.4387215144082
2011-10-01	32.5315026308576
2012-01-01	31.8412590257234
2012-04-01	31.8089838429677
2012-07-01	31.4331280176611
2012-10-01	31.4635222925907
2013-01-01	31.2343950247082
2013-04-01	31.4181963797359
2013-07-01	31.2517040226181
2013-10-01	31.1553652938157
2014-01-01	31.1939946146233
2014-04-01	31.3262964810808
2014-07-01	31.3853091691133
2014-10-01	30.8666326616222
2015-01-01	31.1597011462633
2015-04-01	30.7073239767676
2015-07-01	31.1371200638041
2015-10-01	30.8904645503341
2016-01-01	30.8552866528670
2016-04-01	30.7032634618573
2016-07-01	30.6385078010870
2016-10-01	31.1068896218272
2017-01-01	31.1002454861500
2017-04-01	31.3130717270812
2017-07-01	31.1382388541581
2017-10-01	31.1375723917023
2018-01-01	31.4119090119237
2018-04-01	31.3042673438217
2018-07-01	31.3973463151598