Quarter	Percent, Seasonally Adjusted
1998-01-01	61.8849001937896
1998-04-01	61.5132388389846
1998-07-01	61.2450761188559
1998-10-01	60.8671814392769
1999-01-01	60.7841083000229
1999-04-01	60.5997047553529
1999-07-01	60.5232467565526
1999-10-01	60.5594725127489
2000-01-01	60.4428730309870
2000-04-01	60.0802005254293
2000-07-01	59.7442682887273
2000-10-01	59.5205509598788
2001-01-01	59.2367513446653
2001-04-01	59.3409689377530
2001-07-01	58.9801409367590
2001-10-01	58.9968960033082
2002-01-01	58.7360251772724
2002-04-01	58.6064351863175
2002-07-01	58.4334523936753
2002-10-01	58.5406705245587
2003-01-01	58.4335095038352
2003-04-01	57.9819268935292
2003-07-01	57.9040330136715
2003-10-01	58.5036859824183
2004-01-01	56.0267350312718
2004-04-01	56.3804940472157
2004-07-01	56.3590427640048
2004-10-01	56.0929064032212
2005-01-01	56.4292134314533
2005-04-01	56.6837847542605
2005-07-01	56.9442801497853
2005-10-01	56.3425179395623
2006-01-01	56.1458029661676
2006-04-01	56.2357775110279
2006-07-01	56.5368809601063
2006-10-01	56.3129755098489
2007-01-01	56.9366538811921
2007-04-01	56.7414521472772
2007-07-01	56.0632449023760
2007-10-01	56.0322868752517
2008-01-01	55.5505235212262
2008-04-01	55.2927255391618
2008-07-01	55.3850122191958
2008-10-01	55.8263237688365
2009-01-01	55.8473291199905
2009-04-01	55.8398389578945
2009-07-01	56.0320890328568
2009-10-01	55.9874010148989
2010-01-01	55.9545046557977
2010-04-01	55.8475736380453
2010-07-01	56.0293736697028
2010-10-01	55.7538469685812
2011-01-01	55.7096889674132
2011-04-01	55.8055866593543
2011-07-01	55.5634060368078
2011-10-01	55.0154954961247
2012-01-01	54.2315666256502
2012-04-01	53.8440207802159
2012-07-01	53.8298595331717
2012-10-01	53.7712617550796
2013-01-01	53.6747737465088
2013-04-01	53.9973002486513
2013-07-01	53.9968441747062
2013-10-01	53.7406063849990
2014-01-01	53.4200328497786
2014-04-01	53.5952529399676
2014-07-01	53.0699325413773
2014-10-01	52.7229439744780
2015-01-01	53.3076295372018
2015-04-01	53.3347220448121
2015-07-01	53.6218059865730
2015-10-01	53.4648511047839
2016-01-01	53.1949591742706
2016-04-01	52.3539048770558
2016-07-01	52.3071310661571
2016-10-01	52.1849253422624
2017-01-01	51.9775388046002
2017-04-01	52.0941624878112
2017-07-01	51.5608374747830
2017-10-01	51.7818317349733
2018-01-01	51.5698297345659
2018-04-01	51.1366207608353