Quarter	Percent, Seasonally Adjusted
1999-01-01	23.5396396289107
1999-04-01	24.4799811864307
1999-07-01	26.1953665561280
1999-10-01	25.6787212648660
2000-01-01	20.0292749228919
2000-04-01	22.4364330906052
2000-07-01	25.9740641632605
2000-10-01	21.3361991760702
2001-01-01	20.9696766814517
2001-04-01	22.5505779667234
2001-07-01	26.4513656153869
2001-10-01	23.5074553755119
2002-01-01	22.2776840701369
2002-04-01	23.6139493134203
2002-07-01	26.2643400376811
2002-10-01	24.9565911117368
2003-01-01	22.5260012418504
2003-04-01	24.6213899976520
2003-07-01	26.2512385998261
2003-10-01	22.7367281224176
2004-01-01	22.2999893366422
2004-04-01	23.1720665499124
2004-07-01	24.7196370948885
2004-10-01	22.3950702404551
2005-01-01	21.3983331713051
2005-04-01	22.3640408839224
2005-07-01	24.7444926809790
2005-10-01	21.9410181743570
2006-01-01	21.0967098703888
2006-04-01	21.6684364715363
2006-07-01	23.4225773589711
2006-10-01	22.4431671450391
2007-01-01	20.9377587115225
2007-04-01	22.0081685762822
2007-07-01	24.6595231872695
2007-10-01	21.3840605742394
2008-01-01	21.2505094416520
2008-04-01	22.1379355600761
2008-07-01	22.6051815163555
2008-10-01	23.6923569227344
2009-01-01	24.8967936429657
2009-04-01	25.5949039611451
2009-07-01	26.5827700748624
2009-10-01	23.8907719555393
2010-01-01	23.7628462071668
2010-04-01	24.0252677376171
2010-07-01	25.0099866144326
2010-10-01	23.5443410946153
2011-01-01	22.1791301833542
2011-04-01	22.8749016229883
2011-07-01	24.7455807999172
2011-10-01	23.2413810414287
2012-01-01	22.4009309732345
2012-04-01	24.2802443693831
2012-07-01	26.4074015994982
2012-10-01	24.6594013814275
2013-01-01	24.6943261437011
2013-04-01	26.0018237082067
2013-07-01	27.8493270666025
2013-10-01	26.6108645919023
2014-01-01	26.7974728869414
2014-04-01	28.2794990112063
2014-07-01	29.4864215999710
2014-10-01	29.0309333209939
2015-01-01	28.7778159360648
2015-04-01	28.8932457712337
2015-07-01	31.0857286020134
2015-10-01	29.7820639380363
2016-01-01	29.9689634470963
2016-04-01	29.5830880801395
2016-07-01	31.5484280148591
2016-10-01	29.2568620716984
2017-01-01	28.0778822375492
2017-04-01	28.9912060435744
2017-07-01	29.9765846489617
2017-10-01	28.1119589231650
2018-01-01	27.2900984365952
2018-04-01	27.6935940048308