Quarter	Percent, Seasonally Adjusted
1999-01-01	29.6884479143659
1999-04-01	28.1261067595408
1999-07-01	27.3003202242597
1999-10-01	25.4731881790626
2000-01-01	29.7730789528089
2000-04-01	28.9807758036556
2000-07-01	27.9451345844109
2000-10-01	28.6860968432300
2001-01-01	27.9610166655562
2001-04-01	29.0352568835569
2001-07-01	28.2604260315627
2001-10-01	29.3657248108209
2002-01-01	28.5384222094284
2002-04-01	28.7903939767825
2002-07-01	29.2986944816021
2002-10-01	29.7503033443138
2003-01-01	29.5225209052489
2003-04-01	30.6288237391162
2003-07-01	30.3255531355337
2003-10-01	30.6842662747027
2004-01-01	26.1811933335699
2004-04-01	27.1371985591614
2004-07-01	27.1384529193449
2004-10-01	28.0809813259859
2005-01-01	28.6885667355710
2005-04-01	29.5551357574665
2005-07-01	30.4490149166379
2005-10-01	30.9886097955910
2006-01-01	32.2780544161678
2006-04-01	32.5667746801938
2006-07-01	33.1014229602633
2006-10-01	33.9241265617381
2007-01-01	34.7159625550541
2007-04-01	35.6140801314860
2007-07-01	36.6388042780832
2007-10-01	36.8495898693610
2008-01-01	39.1480148868037
2008-04-01	38.5294670304513
2008-07-01	38.7963077341002
2008-10-01	38.7015721329979
2009-01-01	38.7080820765974
2009-04-01	39.0116440560097
2009-07-01	39.5420326490159
2009-10-01	40.4265571537917
2010-01-01	41.2317543074165
2010-04-01	41.1824667108575
2010-07-01	41.8166907596511
2010-10-01	40.5422965165965
2011-01-01	40.0745593813300
2011-04-01	40.0844503909411
2011-07-01	40.1534286921171
2011-10-01	39.4607329290435
2012-01-01	40.2302814500734
2012-04-01	41.5591285757126
2012-07-01	42.1386901019647
2012-10-01	42.5435185463477
2013-01-01	42.5826238373498
2013-04-01	44.1752361583459
2013-07-01	43.9594639713406
2013-10-01	44.2967668453437
2014-01-01	43.9003898426915
2014-04-01	45.4882534502375
2014-07-01	45.4258438293244
2014-10-01	45.5638762236467
2015-01-01	45.3901638017701
2015-04-01	45.9758445130127
2015-07-01	46.5834053370702
2015-10-01	47.1572586023892
2016-01-01	48.0951335246376
2016-04-01	49.3257768211065
2016-07-01	49.6818549895936
2016-10-01	49.5490349486288
2017-01-01	49.9560173702730
2017-04-01	50.6687876396956
2017-07-01	51.8015404305471
2017-10-01	52.7088152127324
2018-01-01	53.5601989687356
2018-04-01	53.3130785980034