Quarter	Percent, Seasonally Adjusted
1999-01-01	57.2154229087006
1999-04-01	57.2417820179358
1999-07-01	56.8808978455846
1999-10-01	57.6948495944153
2000-01-01	57.1400546996499
2000-04-01	57.5483741001964
2000-07-01	57.4433384786690
2000-10-01	57.6470126725115
2001-01-01	57.8669962518302
2001-04-01	58.3475423484949
2001-07-01	58.7542831129099
2001-10-01	59.8784771308405
2002-01-01	60.2942508329150
2002-04-01	60.3107255502912
2002-07-01	61.0769638376769
2002-10-01	61.4335144434348
2003-01-01	62.2044969120603
2003-04-01	62.3755772948648
2003-07-01	63.0243409104100
2003-10-01	63.6021400104695
2004-01-01	63.4556084193362
2004-04-01	63.6986737193147
2004-07-01	64.7292589525622
2004-10-01	65.4071723451864
2005-01-01	66.1326753359123
2005-04-01	67.4665499604790
2005-07-01	68.3956809168018
2005-10-01	68.4055055399866
2006-01-01	69.0845365969652
2006-04-01	69.1884438464590
2006-07-01	69.0568333166523
2006-10-01	69.2784287986405
2007-01-01	69.4454496679817
2007-04-01	69.3451025369144
2007-07-01	69.4692170144612
2007-10-01	70.8990763880691
2008-01-01	71.3437978883040
2008-04-01	72.5795022106940
2008-07-01	74.3173039383345
2008-10-01	74.8264436737835
2009-01-01	75.3018322416761
2009-04-01	75.1218567750965
2009-07-01	74.0761735585066
2009-10-01	73.8762189766803
2010-01-01	74.3286657019192
2010-04-01	74.5580290073900
2010-07-01	74.4023992416230
2010-10-01	74.6691597300105
2011-01-01	75.9575733366706
2011-04-01	77.3608444064388
2011-07-01	78.4339153016501
2011-10-01	77.5075653607990
2012-01-01	77.0035980940420
2012-04-01	76.5257505629481
2012-07-01	75.9700250409548
2012-10-01	75.9908771009427
2013-01-01	75.4729637179541
2013-04-01	75.9442783540246
2013-07-01	76.5709399800145
2013-10-01	77.2776558815149
2014-01-01	76.7103013030566
2014-04-01	77.0393873600762
2014-07-01	75.7103389575381
2014-10-01	76.2518684696670
2015-01-01	75.0874774206355
2015-04-01	75.0921481902303
2015-07-01	74.7495591786071
2015-10-01	75.6040816108064
2016-01-01	75.9587460096151
2016-04-01	76.4376823554854
2016-07-01	75.1152486601772
2016-10-01	73.6134179804963
2017-01-01	73.8472515932412
2017-04-01	72.9246641988414
2017-07-01	74.2263571527026
2017-10-01	73.1079704307190
2018-01-01	75.3165250539102
2018-04-01	74.8918172281243