Quarter	Percent, Seasonally Adjusted
1998-01-01	40.0429990018562
1998-04-01	40.2684769572768
1998-07-01	40.6106689059926
1998-10-01	40.9332696467391
1999-01-01	41.4761420724569
1999-04-01	40.7151469146252
1999-07-01	40.7941904612622
1999-10-01	40.9342741249076
2000-01-01	41.0402347996881
2000-04-01	41.4494635845771
2000-07-01	41.8950984558125
2000-10-01	42.3160123634646
2001-01-01	41.9080198289357
2001-04-01	41.3652472268072
2001-07-01	41.7172156525644
2001-10-01	41.3322436692086
2002-01-01	42.0458223957588
2002-04-01	42.8703094714046
2002-07-01	43.3749308264429
2002-10-01	43.8043650179556
2003-01-01	43.8783319082624
2003-04-01	44.2296602518065
2003-07-01	44.4813149519973
2003-10-01	44.5762878571128
2004-01-01	44.9094703743439
2004-04-01	45.1857922709419
2004-07-01	45.2671156018841
2004-10-01	45.6183638848546
2005-01-01	45.6045017915552
2005-04-01	45.8533504782651
2005-07-01	45.9852296932259
2005-10-01	46.5382973591418
2006-01-01	46.9968479355966
2006-04-01	47.1836583610778
2006-07-01	47.6648370191095
2006-10-01	47.4583015498714
2007-01-01	47.4075533232838
2007-04-01	47.6261073234447
2007-07-01	47.7040762972245
2007-10-01	48.0096619276243
2008-01-01	48.1593120139034
2008-04-01	48.6236286530101
2008-07-01	48.7417734387235
2008-10-01	48.9092392232136
2009-01-01	48.9454706310663
2009-04-01	48.9233618451116
2009-07-01	48.9426255193792
2009-10-01	48.7620799221547
2010-01-01	48.5443454264119
2010-04-01	48.3512066610429
2010-07-01	47.8893588169155
2010-10-01	47.2450138319002
2011-01-01	46.5056756573650
2011-04-01	45.3609025198544
2011-07-01	44.4836477720429
2011-10-01	43.6226017532250
2012-01-01	42.9432218370337
2012-04-01	41.8381438064100
2012-07-01	41.0971019017361
2012-10-01	41.0351448229814
2013-01-01	40.4928607439216
2013-04-01	39.9276872026309
2013-07-01	39.6087679011339
2013-10-01	39.6139939151892
2014-01-01	40.9078267127209
2014-04-01	40.6412074896119
2014-07-01	41.1901199261850
2014-10-01	41.6077192110826
2015-01-01	41.8123949312830
2015-04-01	42.3881809542665
2015-07-01	42.5526984143640
2015-10-01	43.1092937552194
2016-01-01	43.1269459635444
2016-04-01	43.1299657235967
2016-07-01	43.5745826654679
2016-10-01	43.4512060542714
2017-01-01	44.0870626421386
2017-04-01	44.5355452913466
2017-07-01	44.5212397404779
2017-10-01	44.5291661720158
2018-01-01	44.6703901272280
2018-04-01	45.2814477840457