Quarter	Percent, Seasonally Adjusted
1999-01-01	55.3437337287978
1999-04-01	57.2762866847368
1999-07-01	58.2796177589706
1999-10-01	60.3530257882244
2000-01-01	54.6068018635502
2000-04-01	56.3746493856304
2000-07-01	57.3507756227184
2000-10-01	57.2319372208475
2001-01-01	58.7657504536642
2001-04-01	57.5995969453469
2001-07-01	57.7907068518285
2001-10-01	57.2574759477952
2002-01-01	58.3156566637170
2002-04-01	58.0808576223051
2002-07-01	57.8256706459741
2002-10-01	57.2099030272054
2003-01-01	56.8037603538622
2003-04-01	57.4731660676138
2003-07-01	57.2429811764340
2003-10-01	56.8436634932520
2004-01-01	62.4797275196625
2004-04-01	61.4071522793324
2004-07-01	61.1355518481014
2004-10-01	61.1729951901668
2005-01-01	60.4615085688980
2005-04-01	60.5072808469148
2005-07-01	59.6471755919287
2005-10-01	57.8935180546653
2006-01-01	56.3566579750770
2006-04-01	56.3277109216210
2006-07-01	55.7750464603187
2006-10-01	55.2495736922859
2007-01-01	54.2605502255142
2007-04-01	51.7461205535860
2007-07-01	51.4596415174422
2007-10-01	52.1542036961662
2008-01-01	49.0797413706245
2008-04-01	49.7227633391264
2008-07-01	51.1674532558579
2008-10-01	50.4961981224023
2009-01-01	50.5100687099224
2009-04-01	49.7680424411433
2009-07-01	48.7097923563363
2009-10-01	48.8495065726735
2010-01-01	48.6400464008296
2010-04-01	48.9228437681250
2010-07-01	48.0528266062621
2010-10-01	48.8753854423484
2011-01-01	49.4740098547589
2011-04-01	49.7140383813538
2011-07-01	49.6223459685671
2011-10-01	49.7361326112729
2012-01-01	49.7662662047773
2012-04-01	48.1286967196146
2012-07-01	46.6594597286736
2012-10-01	46.4630477340282
2013-01-01	46.1419324694116
2013-04-01	45.0497015531382
2013-07-01	44.5182298772350
2013-10-01	43.8592081784688
2014-01-01	44.1384544561303
2014-04-01	42.9746458445116
2014-07-01	43.2594889394604
2014-10-01	42.3509252227573
2015-01-01	42.9835065308602
2015-04-01	43.8991426461479
2015-07-01	42.3850007391455
2015-10-01	41.2424727259763
2016-01-01	39.5668362279158
2016-04-01	38.7910374590762
2016-07-01	38.4443049600013
2016-10-01	38.5217179324870
2017-01-01	38.0585962583475
2017-04-01	37.2932545154859
2017-07-01	36.9714705568699
2017-10-01	35.6052784501199
2018-01-01	34.8414792419427
2018-04-01	34.3890142774323