Quarter	Percent, Seasonally Adjusted
1999-04-01	51.4656187283331
1999-07-01	52.6519636118186
1999-10-01	53.0784466377264
2000-01-01	53.6490959847726
2000-04-01	54.4216172286816
2000-07-01	54.2399268351319
2000-10-01	54.3437802263599
2001-01-01	54.2263005639944
2001-04-01	53.3919947097564
2001-07-01	52.7809290195180
2001-10-01	51.7944974109072
2002-01-01	50.9894225815598
2002-04-01	50.4837984124583
2002-07-01	50.4139896655481
2002-10-01	50.4270173191024
2003-01-01	50.2416832691254
2003-04-01	50.6709668003308
2003-07-01	50.4133026146729
2003-10-01	50.7321851465622
2004-01-01	50.8847739169017
2004-04-01	50.6958133189498
2004-07-01	50.7002946402142
2004-10-01	50.5671572270708
2005-01-01	50.9572926344185
2005-04-01	50.8535319759145
2005-07-01	51.7944254375066
2005-10-01	52.2786295126741
2006-01-01	53.0776983437486
2006-04-01	54.0722568830675
2006-07-01	53.8686553767361
2006-10-01	54.7756160522181
2007-01-01	68.8157727246914
2007-04-01	67.8817615815639
2007-07-01	65.5050226821244
2007-10-01	65.1874561920864
2008-01-01	63.1945481436327
2008-04-01	60.9283231591803
2008-07-01	58.1838802043635
2008-10-01	51.6556716222248
2009-01-01	47.6599217328859
2009-04-01	43.7343471869244
2009-07-01	40.8998319621080
2009-10-01	39.2578558938140
2010-01-01	37.8499681465300
2010-04-01	37.0859686099202
2010-07-01	36.2634161971026
2010-10-01	34.9334336409928
2011-01-01	34.6085054767113
2011-04-01	33.7673900363612
2011-07-01	33.1488603643434
2011-10-01	35.3346897765855
2012-01-01	31.8331864757132
2012-04-01	32.0377875728265
2012-07-01	32.5660287862265
2012-10-01	33.4666666580784
2013-01-01	35.0439362164458
2013-04-01	35.5520244564270
2013-07-01	36.1872769413138
2013-10-01	37.0073542625671
2014-01-01	36.2452721078574
2014-04-01	36.6733410814416
2014-07-01	36.9936899785969
2014-10-01	37.4184375625821
2015-01-01	37.6307423201937
2015-04-01	38.2135569896953
2015-07-01	38.6070766256401
2015-10-01	38.9838048051755
2016-01-01	40.0746752372269
2016-04-01	43.1495915609218
2016-07-01	43.4331203095341
2016-10-01	42.7029088698500
2017-01-01	41.6615405807375
2017-04-01	40.6369277016914
2017-07-01	37.7495010833831
2017-10-01	40.8633948004371
2018-01-01	40.6922463905174
2018-04-01	40.8210503230351