Quarter	Percent, Seasonally Adjusted
1999-01-01	58.4007281686946
1999-04-01	58.6150079592925
1999-07-01	59.5814245323989
1999-10-01	59.0778450699793
2000-01-01	59.2759582739593
2000-04-01	58.8583564907168
2000-07-01	59.2140959793100
2000-10-01	58.7971122766296
2001-01-01	58.4806936129725
2001-04-01	56.9462892611010
2001-07-01	56.7372587135529
2001-10-01	55.2282346810718
2002-01-01	54.0709637999344
2002-04-01	54.1993175697834
2002-07-01	53.9695374899815
2002-10-01	52.6655270963328
2003-01-01	53.6063795873648
2003-04-01	52.2315610200909
2003-07-01	51.0373345413383
2003-10-01	50.7295776476545
2004-01-01	49.4891941018519
2004-04-01	48.5650733582564
2004-07-01	47.5882790194761
2004-10-01	46.7157678807317
2005-01-01	45.9804614788699
2005-04-01	45.4536248026991
2005-07-01	44.5720500948850
2005-10-01	43.7185196419040
2006-01-01	43.9990022315004
2006-04-01	45.1562825775945
2006-07-01	45.0866573504932
2006-10-01	44.8962894090100
2007-01-01	44.2915531451094
2007-04-01	43.5392584529182
2007-07-01	42.0205896582944
2007-10-01	42.2303017200308
2008-01-01	41.1116036986686
2008-04-01	40.2785251623313
2008-07-01	39.5805246551026
2008-10-01	39.4936521391275
2009-01-01	40.9826800820231
2009-04-01	41.9236775239520
2009-07-01	41.4538157319796
2009-10-01	40.9160157177746
2010-01-01	39.9811402511798
2010-04-01	39.7811477838323
2010-07-01	40.6481055772325
2010-10-01	40.6856372369796
2011-01-01	41.6376487573658
2011-04-01	41.3341006662476
2011-07-01	41.0784769693957
2011-10-01	40.8839264178849
2012-01-01	41.0175009789737
2012-04-01	39.7374974151894
2012-07-01	40.0638251497174
2012-10-01	38.1570233110391
2013-01-01	40.0189237868564
2013-04-01	39.8786553040364
2013-07-01	40.3287178826516
2013-10-01	41.6046771807090
2014-01-01	41.4274565863083
2014-04-01	41.1461933550130
2014-07-01	40.9441618319970
2014-10-01	40.9931290119398
2015-01-01	41.6425523163804
2015-04-01	42.2093224068595
2015-07-01	41.7024257881584
2015-10-01	40.8492802657548
2016-01-01	40.6509695405362
2016-04-01	38.4467367454283
2016-07-01	40.4940215127399
2016-10-01	39.8882227934840
2017-01-01	40.5620002613017
2017-04-01	40.0561848162796
2017-07-01	39.7959648693919
2017-10-01	39.5210883667638
2018-01-01	39.0267108518629
2018-04-01	39.4755324382867