Quarter	Percent, Seasonally Adjusted
1999-04-01	32.8504578310678
1999-07-01	32.4691016043857
1999-10-01	32.2248915720989
2000-01-01	32.0404913052588
2000-04-01	31.7807134580803
2000-07-01	31.7620933516144
2000-10-01	31.6965704528889
2001-01-01	31.6295024818608
2001-04-01	31.5869251145090
2001-07-01	31.1968691833062
2001-10-01	31.3676557834988
2002-01-01	31.3320453931517
2002-04-01	31.3849623934120
2002-07-01	31.6038065690494
2002-10-01	31.4557056107383
2003-01-01	31.3901414519006
2003-04-01	31.2586639635694
2003-07-01	31.1228657536828
2003-10-01	30.9645584508422
2004-01-01	30.7704951778637
2004-04-01	30.7759125699938
2004-07-01	30.4929834511035
2004-10-01	30.0399106544391
2005-01-01	29.8311575438240
2005-04-01	29.3646412901635
2005-07-01	28.9492451402881
2005-10-01	28.7786890967836
2006-01-01	28.3727781628606
2006-04-01	28.3303155316584
2006-07-01	27.8937548394992
2006-10-01	27.8327801022729
2007-01-01	24.3391170730900
2007-04-01	24.2311485497531
2007-07-01	24.5307579875443
2007-10-01	24.5867030908033
2008-01-01	24.7135894431479
2008-04-01	25.0282360274105
2008-07-01	25.1739201878195
2008-10-01	25.7352498894013
2009-01-01	26.3386097620025
2009-04-01	26.5987781080670
2009-07-01	27.3091218927080
2009-10-01	27.7030531359720
2010-01-01	28.1130049091214
2010-04-01	28.2840964668398
2010-07-01	28.5920114386207
2010-10-01	28.6432144802692
2011-01-01	28.8166701507365
2011-04-01	28.8359681047542
2011-07-01	29.0279482100936
2011-10-01	28.5490949670825
2012-01-01	28.7003118970011
2012-04-01	29.0113825251705
2012-07-01	28.8517686500440
2012-10-01	28.8838803766085
2013-01-01	28.5578749897100
2013-04-01	28.0504592020136
2013-07-01	28.1549048603156
2013-10-01	27.9945921852581
2014-01-01	28.0276337632114
2014-04-01	28.4161168316550
2014-07-01	28.1469934439682
2014-10-01	28.1559735322851
2015-01-01	28.0495927989054
2015-04-01	28.0075576303274
2015-07-01	28.0613880152351
2015-10-01	27.7725759556417
2016-01-01	27.7051711884574
2016-04-01	27.1055122741234
2016-07-01	27.0728293348537
2016-10-01	27.3605324693391
2017-01-01	27.2001726111449
2017-04-01	27.5772549930668
2017-07-01	27.4322020569430
2017-10-01	27.2010381661157
2018-01-01	27.2384060536255
2018-04-01	27.0433836078917