Quarter	Percent, Seasonally Adjusted
1999-01-01	63.5775677127692
1999-04-01	62.4017108762588
1999-07-01	63.3021737830428
1999-10-01	61.4362723280549
2000-01-01	66.9732386662981
2000-04-01	63.7279815019819
2000-07-01	59.6656774513396
2000-10-01	62.7069443383206
2001-01-01	60.3507909656173
2001-04-01	58.6615410535856
2001-07-01	61.6407844253759
2001-10-01	59.4364679234318
2002-01-01	60.6373768320572
2002-04-01	63.1492252091082
2002-07-01	60.0689682556958
2002-10-01	61.9405326836370
2003-01-01	53.9852633723286
2003-04-01	57.4206224047511
2003-07-01	60.1599358507901
2003-10-01	58.9359262708178
2004-01-01	60.0278399994041
2004-04-01	58.9700779683139
2004-07-01	61.9626784355593
2004-10-01	63.4779280191723
2005-01-01	59.9393479548046
2005-04-01	57.1196089713172
2005-07-01	60.8203171085530
2005-10-01	64.2602188095396
2006-01-01	61.8775688183511
2006-04-01	63.8391447098827
2006-07-01	65.5963037426112
2006-10-01	65.2116199142298
2007-01-01	65.7349936674101
2007-04-01	65.7644548665409
2007-07-01	62.2017414778953
2007-10-01	62.3959030164206
2008-01-01	62.6726142894426
2008-04-01	65.7353180323648
2008-07-01	65.5745175767673
2008-10-01	66.9908408061460
2009-01-01	64.9254437218639
2009-04-01	62.9805399942529
2009-07-01	62.4610837019790
2009-10-01	60.9870438061446
2010-01-01	60.5564354620224
2010-04-01	61.5453302010941
2010-07-01	58.6149935677073
2010-10-01	57.3129594350735
2011-01-01	60.3594046909370
2011-04-01	60.1410663634871
2011-07-01	58.1028305864219
2011-10-01	55.6110450624217
2012-01-01	55.6717070531424
2012-04-01	56.0352315145061
2012-07-01	55.8423423595258
2012-10-01	53.9907209555888
2013-01-01	55.7105487361386
2013-04-01	54.9106332512300
2013-07-01	55.6598011577366
2013-10-01	53.9210237119363
2014-01-01	53.2643754713319
2014-04-01	52.4561888384665
2014-07-01	55.7770263510991
2014-10-01	58.0414673336109
2015-01-01	57.3848641971636
2015-04-01	56.8063032745455
2015-07-01	54.5504189108791
2015-10-01	56.1322132628278
2016-01-01	62.0226995298013
2016-04-01	61.3843779011391
2016-07-01	58.3527782448481
2016-10-01	58.2438528942156
2017-01-01	56.9206053878611
2017-04-01	56.3301508308712
2017-07-01	57.4673941857599
2017-10-01	58.2751394987354
2018-01-01	59.0364245217587
2018-04-01	60.5497409340754