Quarter	Percent, Seasonally Adjusted
1999-01-01	32.6570202919263
1999-04-01	33.1594088130419
1999-07-01	33.6956921062863
1999-10-01	34.5005953021880
2000-01-01	35.1957625116537
2000-04-01	35.8059303288287
2000-07-01	36.1645733139553
2000-10-01	36.6575070838914
2001-01-01	37.1631033220915
2001-04-01	37.1565737894312
2001-07-01	37.6633711699954
2001-10-01	37.9004320867744
2002-01-01	38.7668478756205
2002-04-01	39.2470902796724
2002-07-01	39.5531255163571
2002-10-01	39.9511025526206
2003-01-01	40.2319911730547
2003-04-01	40.8641630942304
2003-07-01	41.4245282898949
2003-10-01	41.8689646060383
2004-01-01	42.2064490937162
2004-04-01	42.4808343274808
2004-07-01	43.1799176053282
2004-10-01	43.8254224832713
2005-01-01	44.5847103523124
2005-04-01	45.5972368596616
2005-07-01	45.9129114558415
2005-10-01	46.4105669002593
2006-01-01	46.9168483567471
2006-04-01	47.4253552711528
2006-07-01	47.5157644828795
2006-10-01	48.2576869693310
2007-01-01	48.6809244152092
2007-04-01	49.0082558390638
2007-07-01	49.2225139690651
2007-10-01	49.4776343038298
2008-01-01	49.5440374910905
2008-04-01	49.5145518544769
2008-07-01	49.2719908246110
2008-10-01	48.9194748947222
2009-01-01	47.8296188600818
2009-04-01	47.4239786073598
2009-07-01	47.3485828389972
2009-10-01	47.1449719702176
2010-01-01	47.2740129542561
2010-04-01	46.8435046407598
2010-07-01	46.8768359764686
2010-10-01	47.0676476006982
2011-01-01	46.8845652563338
2011-04-01	47.3821734797843
2011-07-01	46.6345488672146
2011-10-01	46.1637318428643
2012-01-01	46.0611808785673
2012-04-01	45.7221059265594
2012-07-01	45.2412662898290
2012-10-01	44.7619907780971
2013-01-01	44.5871497415792
2013-04-01	44.3514227216374
2013-07-01	44.4554870990554
2013-10-01	44.5044784750456
2014-01-01	44.7351905914523
2014-04-01	44.9111106152515
2014-07-01	44.7384992463332
2014-10-01	45.4646050407685
2015-01-01	45.4581203208639
2015-04-01	46.0658930574930
2015-07-01	46.1563502192364
2015-10-01	46.7889472220693
2016-01-01	46.9689158803762
2016-04-01	47.3060642813683
2016-07-01	47.5793146956756
2016-10-01	47.8032316774005
2017-01-01	47.9426203362380
2017-04-01	48.2949241897366
2017-07-01	48.5330761763732
2017-10-01	48.8565529571799
2018-01-01	48.8811161515443
2018-04-01	49.5494037629221
2018-07-01	49.6491404902826