Quarter	Percent, Seasonally Adjusted
1999-04-01	25.6451424555064
1999-07-01	26.0712545560919
1999-10-01	26.4479781814919
2000-01-01	26.6271602864303
2000-04-01	27.0912657788898
2000-07-01	27.2051053184450
2000-10-01	27.7507518206634
2001-01-01	28.2138298089225
2001-04-01	28.3512866919480
2001-07-01	29.0754764943760
2001-10-01	29.2792722046217
2002-01-01	29.7900013413512
2002-04-01	30.5069358448546
2002-07-01	31.0269056579055
2002-10-01	31.7818740436790
2003-01-01	32.2862704577247
2003-04-01	33.0959528342843
2003-07-01	33.4755077923229
2003-10-01	33.4368892585513
2004-01-01	33.4818942375683
2004-04-01	33.6771646137760
2004-07-01	32.8139506642495
2004-10-01	34.8361375997516
2005-01-01	35.7687298466092
2005-04-01	37.0495423691783
2005-07-01	37.5982468634624
2005-10-01	38.7299423237532
2006-01-01	38.5975428922385
2006-04-01	39.4849769155066
2006-07-01	38.9991333767606
2006-10-01	38.9976872739572
2007-01-01	39.4219547075316
2007-04-01	39.7698761739978
2007-07-01	39.7770950817143
2007-10-01	40.9160243795077
2008-01-01	40.8258968829167
2008-04-01	41.3013197629102
2008-07-01	41.8279814778925
2008-10-01	41.6014867182707
2009-01-01	41.8095039861172
2009-04-01	41.6329499482867
2009-07-01	41.6596348645696
2009-10-01	41.9063694581772
2010-01-01	41.9562668041293
2010-04-01	43.1241807043745
2010-07-01	43.2444124234899
2010-10-01	42.8029464132928
2011-01-01	43.5206603245801
2011-04-01	43.7636119846599
2011-07-01	43.0553564614238
2011-10-01	44.0003009895934
2012-01-01	43.1778059859157
2012-04-01	43.6725975911553
2012-07-01	42.8786111186797
2012-10-01	43.5146907196062
2013-01-01	42.9251056097494
2013-04-01	43.6705750586253
2013-07-01	43.7694658189488
2013-10-01	45.1807387157478
2014-01-01	44.4687714152578
2014-04-01	45.2782310252441
2014-07-01	45.3637990351281
2014-10-01	45.6720577114448
2015-01-01	46.0931872488850
2015-04-01	46.2993169938762
2015-07-01	47.0815675757872
2015-10-01	47.9525090907812
2016-01-01	48.8256346878623
2016-04-01	48.7960555351513
2016-07-01	49.0398974025105
2016-10-01	49.7136711382359
2017-01-01	49.7780792753617
2017-04-01	50.7938642483486
2017-07-01	50.1681941027251
2017-10-01	51.8005687121806
2018-01-01	51.0484241359139
2018-04-01	51.8977028994802