Quarter	Percent, Seasonally Adjusted
1999-04-01	26.8601283431072
1999-07-01	27.1520405764618
1999-10-01	27.3936558066055
2000-01-01	27.3157767505587
2000-04-01	27.7724785479350
2000-07-01	27.8816818872747
2000-10-01	28.4174206231429
2001-01-01	29.0564521426416
2001-04-01	29.1239641547435
2001-07-01	29.6070897361347
2001-10-01	29.8636920264322
2002-01-01	30.5425316816951
2002-04-01	31.1952598734658
2002-07-01	31.7094739144230
2002-10-01	32.7363596793827
2003-01-01	33.0631285939363
2003-04-01	33.8110820102173
2003-07-01	34.2412105390881
2003-10-01	34.1925717163829
2004-01-01	34.2845354936809
2004-04-01	34.2069320910481
2004-07-01	33.6586503382125
2004-10-01	35.6160126070655
2005-01-01	36.7985860555849
2005-04-01	38.0169893096614
2005-07-01	38.3590727739531
2005-10-01	39.6825583825686
2006-01-01	39.6486474630952
2006-04-01	40.2844935674630
2006-07-01	40.1382364317497
2006-10-01	39.8792795685844
2007-01-01	40.4909902680523
2007-04-01	40.8253492125720
2007-07-01	40.7760421249369
2007-10-01	42.0032463774770
2008-01-01	41.8093329072006
2008-04-01	42.6011300546538
2008-07-01	43.4459455050776
2008-10-01	43.0746090656721
2009-01-01	43.9100159375158
2009-04-01	43.3142557998413
2009-07-01	44.1810017944513
2009-10-01	44.2794650060500
2010-01-01	45.1542118734989
2010-04-01	46.0123533367954
2010-07-01	46.5015011856691
2010-10-01	45.7749371719400
2011-01-01	46.3629742142028
2011-04-01	46.9047558320336
2011-07-01	47.1668848614466
2011-10-01	47.3690553150588
2012-01-01	46.6213822946160
2012-04-01	46.7010742729091
2012-07-01	46.8374259854010
2012-10-01	47.1630361159333
2013-01-01	48.0696374757794
2013-04-01	48.4438345678635
2013-07-01	48.1353940681525
2013-10-01	48.8640374447783
2014-01-01	48.7873954414430
2014-04-01	49.2342609758697
2014-07-01	49.3188162317110
2014-10-01	49.5215922659770
2015-01-01	49.1472681327872
2015-04-01	50.0100092250645
2015-07-01	50.4561281146103
2015-10-01	50.5938460422327
2016-01-01	51.6929474658661
2016-04-01	51.5875903121845
2016-07-01	51.7406432576429
2016-10-01	52.5533817117455
2017-01-01	53.1104801941455
2017-04-01	53.7490237754843
2017-07-01	53.0035355728752
2017-10-01	54.7790879799446
2018-01-01	53.3621813319689
2018-04-01	54.0728767061478