Quarter	Percent, Seasonally Adjusted
1999-04-01	63.0809916421809
1999-07-01	63.7676496799224
1999-10-01	64.1928361216133
2000-01-01	64.6551340063738
2000-04-01	65.1375787701026
2000-07-01	65.3822879145758
2000-10-01	65.5458650917691
2001-01-01	65.7467070892666
2001-04-01	65.7597446924848
2001-07-01	65.9650082274025
2001-10-01	65.8254424777514
2002-01-01	65.5702215217262
2002-04-01	65.5756075007206
2002-07-01	65.3700087326781
2002-10-01	65.3067331412815
2003-01-01	65.3089161622106
2003-04-01	65.5091603142827
2003-07-01	65.4162685936626
2003-10-01	65.7626761008133
2004-01-01	66.0344287813187
2004-04-01	66.0015820895790
2004-07-01	66.3154671687869
2004-10-01	66.7532520579001
2005-01-01	67.1458213790566
2005-04-01	67.5476751076401
2005-07-01	67.9075050846114
2005-10-01	67.9839872881374
2006-01-01	68.4765572737612
2006-04-01	68.4784821820807
2006-07-01	68.6940928765839
2006-10-01	69.0085064246218
2007-01-01	71.8529844762436
2007-04-01	71.8388011491858
2007-07-01	71.7790519856198
2007-10-01	71.5350111869083
2008-01-01	71.1178035910108
2008-04-01	70.3507637591032
2008-07-01	69.2800189745448
2008-10-01	67.9428083250650
2009-01-01	65.4129985576302
2009-04-01	63.9202887722002
2009-07-01	62.9338474806747
2009-10-01	62.2752678009196
2010-01-01	61.6822860244278
2010-04-01	61.2028440882032
2010-07-01	60.9095740630325
2010-10-01	60.1722320471286
2011-01-01	60.1567902383287
2011-04-01	60.2206103904814
2011-07-01	59.7731504470390
2011-10-01	60.0095652468324
2012-01-01	59.7135289342282
2012-04-01	59.7376617634981
2012-07-01	59.9612233618674
2012-10-01	60.2505031112156
2013-01-01	60.8690100867137
2013-04-01	61.4637955811219
2013-07-01	62.0732923599751
2013-10-01	62.5307947809366
2014-01-01	62.5563088565996
2014-04-01	62.7312779274724
2014-07-01	63.3037757992854
2014-10-01	63.8307494241906
2015-01-01	64.1292994957660
2015-04-01	64.6052224027702
2015-07-01	64.9119689473153
2015-10-01	65.2547451614570
2016-01-01	65.6674003269669
2016-04-01	66.3322895165744
2016-07-01	66.8258987820485
2016-10-01	67.0342706835092
2017-01-01	67.3965189244189
2017-04-01	67.4796176070224
2017-07-01	67.6718491174592
2017-10-01	68.0755915042681
2018-01-01	68.3877793090552
2018-04-01	68.5783887926029