Quarter	Percent, Seasonally Adjusted
1999-01-01	17.9177668804225
1999-04-01	16.0535747972081
1999-07-01	16.9213355970572
1999-10-01	16.3164868445959
2000-01-01	16.1144578313253
2000-04-01	16.0811760376260
2000-07-01	18.6398822723836
2000-10-01	18.4180885528754
2001-01-01	16.1858373922818
2001-04-01	16.2342297210581
2001-07-01	16.0303515951713
2001-10-01	15.7520134856715
2002-01-01	18.0954121732773
2002-04-01	17.4040219378428
2002-07-01	18.2998171846435
2002-10-01	19.1555474319137
2003-01-01	19.8671143448365
2003-04-01	18.4248198018394
2003-07-01	19.4568518849384
2003-10-01	19.8677863140968
2004-01-01	21.4598096223391
2004-04-01	21.8174440001614
2004-07-01	22.6054982383651
2004-10-01	22.6048377701541
2005-01-01	21.7215197101977
2005-04-01	24.0403368324007
2005-07-01	23.2430145229836
2005-10-01	24.4501744786630
2006-01-01	23.3349785041253
2006-04-01	24.3891316285507
2006-07-01	25.3880005201710
2006-10-01	25.3707637850772
2007-01-01	26.0847568041864
2007-04-01	28.3663249954940
2007-07-01	26.9104956922621
2007-10-01	28.5460874389418
2008-01-01	27.9230043458795
2008-04-01	25.4987837046069
2008-07-01	30.3193163155562
2008-10-01	27.7320891400614
2009-01-01	27.3472333823121
2009-04-01	29.9740860009066
2009-07-01	29.9762426759116
2009-10-01	29.8070379006627
2010-01-01	31.4139345670715
2010-04-01	29.6560789365587
2010-07-01	31.6982573723750
2010-10-01	30.6889851757661
2011-01-01	31.5402955710440
2011-04-01	34.9878426461036
2011-07-01	33.2588780841276
2011-10-01	32.1411712038410
2012-01-01	33.0165496726240
2012-04-01	36.0908284235459
2012-07-01	36.1215689122908
2012-10-01	34.4133115483927
2013-01-01	36.7406062555205
2013-04-01	36.3146037430462
2013-07-01	39.8901860841029
2013-10-01	38.3777416390486
2014-01-01	36.4126907993008
2014-04-01	39.6614033270439
2014-07-01	39.6759675535025
2014-10-01	40.0823832060145
2015-01-01	40.0800528288538
2015-04-01	41.2883292643870
2015-07-01	41.1818516110285
2015-10-01	42.2349702536153
2016-01-01	41.5906124651889
2016-04-01	42.4739222161851
2016-07-01	42.5151933897080
2016-10-01	44.4910907409868
2017-01-01	44.3377398901315
2017-04-01	45.8908783635192
2017-07-01	47.2229093099904
2017-10-01	45.6139761928350
2018-01-01	45.6268616360017
2018-04-01	46.6284223893793