Quarter	Percent, Seasonally Adjusted
1999-01-01	40.2151639344262
1999-04-01	41.4268687212668
1999-07-01	40.6377204884668
1999-10-01	40.1228249744115
2000-01-01	41.4365576825343
2000-04-01	42.0456466610313
2000-07-01	40.3065521307057
2000-10-01	39.2983639736886
2001-01-01	39.9226110363392
2001-04-01	40.6108407450915
2001-07-01	39.9462907015777
2001-10-01	40.7214765100671
2002-01-01	42.7566571763524
2002-04-01	42.1765295887663
2002-07-01	42.5329551143000
2002-10-01	41.7291354322839
2003-01-01	43.4241115908336
2003-04-01	42.4297520661157
2003-07-01	42.0645373724070
2003-10-01	41.8989832732043
2004-01-01	41.3629678051969
2004-04-01	42.4311552875998
2004-07-01	42.6088369070825
2004-10-01	43.3754454162617
2005-01-01	43.5049217363240
2005-04-01	44.0803212851406
2005-07-01	43.4511434511434
2005-10-01	43.3917197452229
2006-01-01	42.3771790808241
2006-04-01	43.3118008507956
2006-07-01	43.2847516063313
2006-10-01	42.3850350740452
2007-01-01	43.3023255813954
2007-04-01	43.9358915087070
2007-07-01	45.6411827792248
2007-10-01	44.2023464878866
2008-01-01	43.2994384580361
2008-04-01	44.8458282950423
2008-07-01	44.4595001505571
2008-10-01	43.2578371081446
2009-01-01	43.5023179303126
2009-04-01	42.8550141558635
2009-07-01	42.1888921888922
2009-10-01	42.6287744227354
2010-01-01	43.5193386477709
2010-04-01	43.8033559022667
2010-07-01	43.7628412092750
2010-10-01	44.0526700804682
2011-01-01	42.5715119673088
2011-04-01	42.0148493230456
2011-07-01	42.2825613474662
2011-10-01	41.1790266512167
2012-01-01	41.7882420915788
2012-04-01	41.9953930319608
2012-07-01	42.6972740315638
2012-10-01	41.3127413127413
2013-01-01	40.1941193262918
2013-04-01	41.3340935005701
2013-07-01	40.9194420723029
2013-10-01	41.4606422279056
2014-01-01	41.6796708753015
2014-04-01	41.8341352957826
2014-07-01	42.8006775832863
2014-10-01	41.9014084507042
2015-01-01	43.1827775432672
2015-04-01	44.9417707310229
2015-07-01	45.1594851706771
2015-10-01	44.8939732142857
2016-01-01	45.4912329529641
2016-04-01	46.1495768003330
2016-07-01	46.5827338129496
2016-10-01	47.1789212305146
2017-01-01	48.2061855670103
2017-04-01	50.6374228923920
2017-07-01	50.9364319890636
2017-10-01	51.1041439476554
2018-01-01	53.2970768184908
2018-04-01	54.8299688389107