Quarter	Percent, Seasonally Adjusted
1998-04-01	63.3373786407767
1999-04-01	64.7216143933868
2000-04-01	64.9969751966122
2001-04-01	63.9515355086372
2002-04-01	65.3987439270056
2003-04-01	63.4658224879822
2004-04-01	61.8871415356152
2005-04-01	59.8971428571429
2006-04-01	63.3359737467466
2007-04-01	62.5937954978161
2008-04-01	62.4227714033539
2009-04-01	61.5921483097056
2010-01-01	62.0523406241114
2010-04-01	62.1488355248725
2010-07-01	63.2039337566574
2010-10-01	62.6526688549608
2011-01-01	63.2475898273697
2011-04-01	63.3159130485874
2011-07-01	63.2749348809845
2011-10-01	63.1969764699823
2012-01-01	62.3370273567272
2012-04-01	61.8775415367711
2012-07-01	62.3899935280188
2012-10-01	61.2009336457324
2013-01-01	62.6838308693338
2013-04-01	62.0164585766710
2013-07-01	61.4545037521231
2013-10-01	62.1037666839953
2014-01-01	61.4268466621684
2014-04-01	61.7550537575436
2014-07-01	61.6173727543606
2014-10-01	63.4446992942111
2015-01-01	61.9382922654770
2015-04-01	61.6374560962584
2015-07-01	61.2632447885850
2015-10-01	61.4161079557856
2016-01-01	62.6448277658762
2016-04-01	62.0423222299080
2016-07-01	61.7516732243576
2016-10-01	63.5166182154966
2017-01-01	63.4624488963080
2017-04-01	62.8637574321110
2017-07-01	63.3155350930665
2017-10-01	62.8682763904237
2018-01-01	61.8988008516609
2018-04-01	62.1799633687864