Quarter	Percent, Seasonally Adjusted
1999-01-01	47.2639056186954
1999-04-01	47.0699528524634
1999-07-01	46.9392642679985
1999-10-01	46.8686394463720
2000-01-01	46.8957988501848
2000-04-01	46.7060394825963
2000-07-01	46.5969545932503
2000-10-01	46.3040089157340
2001-01-01	46.9205239264297
2001-04-01	47.2562111372804
2001-07-01	47.2062853391008
2001-10-01	47.4442990204246
2002-01-01	47.2404958921125
2002-04-01	47.1227708036014
2002-07-01	47.0105736568808
2002-10-01	46.8121533495169
2003-01-01	46.5356880112396
2003-04-01	46.1482349069995
2003-07-01	46.0891691580321
2003-10-01	46.0251146088434
2004-01-01	46.0897955362928
2004-04-01	46.3356287164770
2004-07-01	46.3623059767849
2004-10-01	46.0719465371278
2005-01-01	45.8077208828314
2005-04-01	45.6663499481469
2005-07-01	45.4143521804650
2005-10-01	45.3732520064127
2006-01-01	45.0713209629175
2006-04-01	44.9432682580984
2006-07-01	45.0286903082375
2006-10-01	44.8413785282454
2007-01-01	45.0789188972683
2007-04-01	45.2644272984974
2007-07-01	45.3902145484795
2007-10-01	45.4538628618975
2008-01-01	45.7850514510796
2008-04-01	45.8836716989045
2008-07-01	45.5180370861165
2008-10-01	45.6631798825578
2009-01-01	45.7865758174381
2009-04-01	45.7171380804132
2009-07-01	45.8599042594388
2009-10-01	45.5695494496452
2010-01-01	45.2552244361168
2010-04-01	45.1709420445580
2010-07-01	45.1077890187767
2010-10-01	45.1268381134187
2011-01-01	45.0831615013968
2011-04-01	44.8340714970236
2011-07-01	44.6918386190725
2011-10-01	44.4572819865309
2012-01-01	44.1907596811486
2012-04-01	43.7627374164951
2012-07-01	43.4486838315188
2012-10-01	43.3213621443011
2013-01-01	43.7077667730809
2013-04-01	43.1243091172354
2013-07-01	42.8737970907204
2013-10-01	42.4899881185076
2014-01-01	41.6504871614588
2014-04-01	41.4855935733963
2014-07-01	41.1511010574829
2014-10-01	40.9796556073066
2015-01-01	40.5101462718892
2015-04-01	40.1781768446700
2015-07-01	39.8592719479880
2015-10-01	39.6860212166937
2016-01-01	39.3176083965670
2016-04-01	39.0552225050811
2016-07-01	38.8098593691914
2016-10-01	38.4643224370926
2017-01-01	38.5345885289112
2017-04-01	38.1779494830895
2017-07-01	38.0477607138989
2017-10-01	37.8964961766722
2018-01-01	37.6451684676888
2018-04-01	37.6104794597236