Quarter	Percent, Seasonally Adjusted
1998-01-01	42.3595193429178
1998-04-01	39.5556391721872
1998-07-01	41.2560145260186
1998-10-01	41.2587603879807
1999-01-01	41.1737406746924
1999-04-01	41.2483084208589
1999-07-01	40.9538324686277
1999-10-01	42.6556384988860
2000-01-01	40.1847286294362
2000-04-01	37.7596336821210
2000-07-01	38.1371686705869
2000-10-01	36.7551573095253
2001-01-01	36.7384136822550
2001-04-01	35.9645262626954
2001-07-01	34.2823771074056
2001-10-01	35.4328364055419
2002-01-01	36.8399061755498
2002-04-01	34.5653407343705
2002-07-01	33.9664413860855
2002-10-01	34.1999405441058
2003-01-01	35.9186594868217
2003-04-01	35.6644850976129
2003-07-01	36.1260448013535
2003-10-01	37.2094649510824
2004-01-01	37.8081827658361
2004-04-01	35.6735817428847
2004-07-01	34.0534357839747
2004-10-01	34.7840770830622
2005-01-01	33.2607022516995
2005-04-01	34.3307093249536
2005-07-01	33.7640379088499
2005-10-01	35.5270411844198
2006-01-01	34.2573920728335
2006-04-01	33.8880217143474
2006-07-01	33.5494770053003
2006-10-01	35.2930867866416
2007-01-01	33.3402610780793
2007-04-01	31.7822042263747
2007-07-01	31.9653656223544
2007-10-01	29.6175627791184
2008-01-01	29.7595577572414
2008-04-01	27.3154720814041
2008-07-01	27.8911450692378
2008-10-01	28.3752428899747
2009-01-01	31.8849674088801
2009-04-01	32.1551388341048
2009-07-01	33.1499087085381
2009-10-01	36.0190815904548
2010-01-01	37.7451299756257
2010-04-01	38.8361445639738
2010-07-01	41.2416502351556
2010-10-01	43.5629867086741
2011-01-01	46.5236298399645
2011-04-01	50.3161977909262
2011-07-01	52.2147010374318
2011-10-01	57.1429605795213
2012-01-01	60.2270761023883
2012-04-01	61.7633440883395
2012-07-01	65.3514689645389
2012-10-01	64.9724545590335
2013-01-01	65.8030113076987
2013-04-01	64.8267678029865
2013-07-01	62.9159152887974
2013-10-01	61.7282353342953
2014-01-01	60.7881813205346
2014-04-01	57.7484263527674
2014-07-01	57.3215176922128
2014-10-01	56.5790284191106
2015-01-01	55.8760380578542
2015-04-01	54.0383576868030
2015-07-01	55.5990338859544
2015-10-01	54.3780327428112
2016-01-01	53.4197320227853
2016-04-01	52.1961690337132
2016-07-01	48.4913872948194
2016-10-01	48.7853013375640
2017-01-01	50.3499118115134
2017-04-01	48.9007302695477
2017-07-01	45.5888757333580
2017-10-01	47.7257289044390
2018-01-01	47.2061853348544
2018-04-01	42.9627355142273