Quarter	Percent, Seasonally Adjusted
1999-01-01	22.7475752188152
1999-04-01	22.8817508101196
1999-07-01	21.0029860768480
1999-10-01	21.2048521395448
2000-01-01	21.7185605208442
2000-04-01	21.8398209872140
2000-07-01	23.7272250715703
2000-10-01	23.7182403742037
2001-01-01	25.2211977388934
2001-04-01	22.9721938693145
2001-07-01	26.4087106200306
2001-10-01	27.2853286954197
2002-01-01	26.1989010919788
2002-04-01	25.3929184791430
2002-07-01	23.5792282072003
2002-10-01	22.6739704278746
2003-01-01	23.6628519323400
2003-04-01	22.1485374095742
2003-07-01	21.7787243857220
2003-10-01	26.3119804424643
2004-01-01	27.2071353850205
2004-04-01	29.4819929126263
2004-07-01	29.9968452920882
2004-10-01	29.3211076655419
2005-01-01	29.2608422994755
2005-04-01	30.4764288468864
2005-07-01	31.3491201098233
2005-10-01	31.8137566064911
2006-01-01	33.1837089602305
2006-04-01	32.8148336253565
2006-07-01	32.2593284972533
2006-10-01	31.9549626528491
2007-01-01	31.7488735659634
2007-04-01	34.1493677299702
2007-07-01	34.5366171950990
2007-10-01	33.3247701379758
2008-01-01	32.2849236335516
2008-04-01	32.8708013438712
2008-07-01	32.8933429777987
2008-10-01	33.0431859530039
2009-01-01	33.5831836468937
2009-04-01	35.7506603946177
2009-07-01	36.7627067020542
2009-10-01	36.2720817307172
2010-01-01	36.0648352454816
2010-04-01	34.8160844057065
2010-07-01	35.2189963344106
2010-10-01	33.9400366575036
2011-01-01	30.8715098739267
2011-04-01	29.9589999831224
2011-07-01	32.0308491722917
2011-10-01	32.0006623870648
2012-01-01	32.0468574332115
2012-04-01	32.1303752784364
2012-07-01	32.8359157493087
2012-10-01	34.5825480079854
2013-01-01	32.7147262865238
2013-04-01	33.4289029652769
2013-07-01	33.9034445881888
2013-10-01	33.9526747408128
2014-01-01	33.6288022985817
2014-04-01	35.8280254480824
2014-07-01	36.0771672188439
2014-10-01	36.1199408223613
2015-01-01	35.8367150557443
2015-04-01	37.3978182457417
2015-07-01	36.9968983926230
2015-10-01	36.1559124013263
2016-01-01	38.6157552911439
2016-04-01	38.6491131410770
2016-07-01	37.5209784924548
2016-10-01	39.2902379995983
2017-01-01	40.9285909255623
2017-04-01	42.6127354990771
2017-07-01	42.7516795484660
2017-10-01	44.6065185663498
2018-01-01	44.8214351999897
2018-04-01	46.7631859370272