Quarter	Percent, Seasonally Adjusted
1999-01-01	11.5731659474304
1999-04-01	11.6349794993113
1999-07-01	11.0950267133225
1999-10-01	11.0546767668815
2000-01-01	11.4749471733273
2000-04-01	11.1946476859309
2000-07-01	10.2105161447584
2000-10-01	10.2554179566563
2001-01-01	10.9404990403071
2001-04-01	11.0556621880998
2001-07-01	11.4055299539170
2001-10-01	10.5990783410138
2002-01-01	10.9831029185868
2002-04-01	10.6333973128599
2002-07-01	11.1622554660529
2002-10-01	11.5930902111324
2003-01-01	11.4395393474088
2003-04-01	12.2409823484267
2003-07-01	12.8933231005372
2003-10-01	13.2053742802303
2004-01-01	12.9670329670330
2004-04-01	14.4061583577713
2004-07-01	15.6626506024096
2004-10-01	16.1233167965982
2005-01-01	16.5485471296952
2005-04-01	17.8368794326241
2005-07-01	18.5782967032967
2005-10-01	19.4711538461538
2006-01-01	19.3847171683758
2006-04-01	21.0125744540040
2006-07-01	21.2892561983471
2006-10-01	21.9101123595506
2007-01-01	22.1122112211221
2007-04-01	23.2473544973545
2007-07-01	23.3354470513634
2007-10-01	24.3894703457025
2008-01-01	25.2063492063492
2008-04-01	25.5082592121982
2008-07-01	27.6388041488713
2008-10-01	27.2727272727273
2009-01-01	27.4252593044539
2009-04-01	29.0332059947106
2009-07-01	29.9471520845567
2009-10-01	29.5000000000000
2010-01-01	31.4923619271445
2010-04-01	32.4132043255549
2010-07-01	32.4992891669036
2010-10-01	32.5925925925926
2011-01-01	32.6367885620016
2011-04-01	34.1115078275199
2011-07-01	35.3765805387576
2011-10-01	36.1485557083906
2012-01-01	37.0873269435570
2012-04-01	38.0356667553899
2012-07-01	38.3284535533670
2012-10-01	38.6212403513442
2013-01-01	40.0995285489785
2013-04-01	40.2566788894709
2013-07-01	40.2410269845428
2013-10-01	41.1995809324254
2014-01-01	40.5188067444877
2014-04-01	41.3641078838174
2014-07-01	42.6867219917012
2014-10-01	44.0155440414508
2015-01-01	44.9132798343257
2015-04-01	44.9327817993795
2015-07-01	46.1220268872802
2015-10-01	47.3371251292658
2016-01-01	46.2914937759336
2016-04-01	48.2749675745785
2016-07-01	48.6121919584955
2016-10-01	49.5719844357977
2017-01-01	51.1755485893417
2017-04-01	53.2776181770697
2017-07-01	53.0948028205798
2017-10-01	54.5834421519979
2018-01-01	53.3174729051018
2018-04-01	52.8152260111023