Quarter	Percent, Seasonally Adjusted
1999-01-01	16.43899500698930
1999-04-01	15.75141377548330
1999-07-01	15.48227770609100
1999-10-01	15.16976645551380
2000-01-01	14.45097854930400
2000-04-01	14.03428490414350
2000-07-01	13.80105766512820
2000-10-01	13.40941764677100
2001-01-01	10.53298756873220
2001-04-01	10.56772501516930
2001-07-01	10.50049857314240
2001-10-01	10.60886482998310
2002-01-01	11.16045051802490
2002-04-01	11.33533176244550
2002-07-01	11.70825925390260
2002-10-01	11.60447341299730
2003-01-01	11.61132863697500
2003-04-01	11.44290471469100
2003-07-01	11.53871752084160
2003-10-01	11.36208573603400
2004-01-01	11.12944747827590
2004-04-01	11.21553711372740
2004-07-01	11.01352189142500
2004-10-01	10.51739465108030
2005-01-01	9.78613123186518
2005-04-01	9.41434989050058
2005-07-01	8.72936114840012
2005-10-01	8.70018127336935
2006-01-01	8.62149011174699
2006-04-01	8.51958373629436
2006-07-01	8.43352437014265
2006-10-01	8.26659195881226
2007-01-01	7.98689124423768
2007-04-01	7.98892589487960
2007-07-01	8.38427987879280
2007-10-01	8.58014111969686
2008-01-01	9.12944448179559
2008-04-01	10.39879402276070
2008-07-01	11.65228169748540
2008-10-01	13.81794742302780
2009-01-01	16.72733308255120
2009-04-01	17.81333836696850
2009-07-01	18.20565663381020
2009-10-01	18.73534567603240
2010-01-01	19.30826817026260
2010-04-01	19.95032090491320
2010-07-01	20.04464075225340
2010-10-01	20.18254024348440
2011-01-01	20.51779566221280
2011-04-01	20.73652025406520
2011-07-01	21.74115473716850
2011-10-01	22.61841000261160
2012-01-01	23.60267983302940
2012-04-01	24.52133935518370
2012-07-01	25.26275169496030
2012-10-01	25.83254319211610
2013-01-01	26.33137010724470
2013-04-01	26.19261622915850
2013-07-01	26.12828076212210
2013-10-01	25.77359421917370
2014-01-01	25.30557795402240
2014-04-01	24.60836848476640
2014-07-01	24.16263141262110
2014-10-01	23.74225252314560
2015-01-01	23.14380674473500
2015-04-01	22.49489927344760
2015-07-01	21.68062193783900
2015-10-01	20.94079373011920
2016-01-01	20.36080152522120
2016-04-01	20.12582573194080
2016-07-01	19.41380905893120
2016-10-01	18.66790284625240
2017-01-01	18.10111134886780
2017-04-01	17.36505199037050
2017-07-01	16.88922756232660
2017-10-01	16.56828950327330
2018-01-01	16.08357991461650
2018-04-01	15.43856788967760
2018-07-01	15.06547459288080