Quarter	Percent, Seasonally Adjusted
1999-04-01	60.1921207023254
1999-07-01	60.3491756243648
1999-10-01	60.4998989659346
2000-01-01	60.5697484445926
2000-04-01	60.6207524193084
2000-07-01	60.8627580916269
2000-10-01	60.5648805315599
2001-01-01	60.5098363872926
2001-04-01	60.4565518513387
2001-07-01	60.4665555031556
2001-10-01	60.6912617197200
2002-01-01	60.6808073380463
2002-04-01	61.0114332128976
2002-07-01	61.0417660504638
2002-10-01	60.9757343156077
2003-01-01	60.8756896818561
2003-04-01	60.8942010176808
2003-07-01	60.9545371875261
2003-10-01	61.0836777371817
2004-01-01	61.2304758172887
2004-04-01	61.2960930916851
2004-07-01	61.1339529906736
2004-10-01	61.3380195700301
2005-01-01	61.6009279266670
2005-04-01	61.4724723023118
2005-07-01	61.6943092603482
2005-10-01	61.7499662151787
2006-01-01	62.0951360421383
2006-04-01	62.2628857578636
2006-07-01	62.2052928283635
2006-10-01	62.1667508604866
2007-01-01	61.8222873967992
2007-04-01	61.7811329500895
2007-07-01	61.9589216782299
2007-10-01	62.1177332155963
2008-01-01	62.1171619800485
2008-04-01	62.2631573193279
2008-07-01	62.2917029612628
2008-10-01	62.3167673705568
2009-01-01	62.4687457530805
2009-04-01	62.3897202452524
2009-07-01	62.4202121440730
2009-10-01	62.5370030517609
2010-01-01	62.2849486782519
2010-04-01	62.3710869398143
2010-07-01	62.4801215387609
2010-10-01	62.2998013416932
2011-01-01	62.5364577560558
2011-04-01	62.5138968643047
2011-07-01	62.4953913484260
2011-10-01	62.5760475696148
2012-01-01	62.5169337214323
2012-04-01	62.6116819439598
2012-07-01	62.7871597532087
2012-10-01	63.1037964319747
2013-01-01	63.1075022579090
2013-04-01	63.1198957438681
2013-07-01	63.2333985594926
2013-10-01	63.2923595654388
2014-01-01	63.3772249552073
2014-04-01	63.5006149749380
2014-07-01	63.5030752707279
2014-10-01	63.5706799617259
2015-01-01	63.6314307052864
2015-04-01	63.6609968048741
2015-07-01	63.7303952244621
2015-10-01	63.7556971496328
2016-01-01	63.7729634827972
2016-04-01	64.0257051133206
2016-07-01	64.1537257706638
2016-10-01	64.2533509949576
2017-01-01	64.2945452548600
2017-04-01	64.4322088457844
2017-07-01	64.4843073943893
2017-10-01	64.5697706023291
2018-01-01	64.7421428117592
2018-04-01	64.6212753433799