Quarter	Percent, Seasonally Adjusted
1998-01-01	69.7706942367270
1998-04-01	69.8834350676201
1998-07-01	70.1613120143813
1998-10-01	70.2443038916686
1999-01-01	70.5689527721649
1999-04-01	70.0448788811655
1999-07-01	69.6740060292769
1999-10-01	69.4850393278253
2000-01-01	70.0264301484492
2000-04-01	70.3477505317130
2000-07-01	70.6082160666700
2000-10-01	71.0291507057364
2001-01-01	71.0196423043950
2001-04-01	70.5783164240821
2001-07-01	70.5431456617470
2001-10-01	70.3005165042848
2002-01-01	70.7242171570981
2002-04-01	71.5501012233536
2002-07-01	71.7978509744482
2002-10-01	72.2984795112507
2003-01-01	72.5394163625706
2003-04-01	72.6556813720276
2003-07-01	73.0413452265721
2003-10-01	73.0788496253413
2004-01-01	73.2370144595154
2004-04-01	73.3584414941984
2004-07-01	73.4355391529278
2004-10-01	73.6904776129963
2005-01-01	73.8531518952578
2005-04-01	73.9158195679519
2005-07-01	73.7793432454593
2005-10-01	74.4419696572608
2006-01-01	74.8175464469418
2006-04-01	74.9413477242678
2006-07-01	75.5612263166359
2006-10-01	75.6291361294149
2007-01-01	75.4080924573277
2007-04-01	75.3337141687605
2007-07-01	75.4185679342897
2007-10-01	75.6033072938588
2008-01-01	76.0139880899635
2008-04-01	76.1283612893336
2008-07-01	75.9955420593250
2008-10-01	75.9074012809214
2009-01-01	75.5626415203262
2009-04-01	75.4528579775633
2009-07-01	75.1613006667154
2009-10-01	74.9079094761918
2010-01-01	74.3660716833077
2010-04-01	73.6366943966543
2010-07-01	72.7745352642120
2010-10-01	71.8494206336440
2011-01-01	70.7115742560546
2011-04-01	69.3934095700672
2011-07-01	68.2826792546744
2011-10-01	66.7641994831758
2012-01-01	65.6859326591321
2012-04-01	64.0362181364540
2012-07-01	63.0413565706329
2012-10-01	62.7441657157368
2013-01-01	61.8582762729407
2013-04-01	61.3602264121970
2013-07-01	61.0313520172530
2013-10-01	61.1104785296727
2014-01-01	61.9349319057955
2014-04-01	61.9238642904984
2014-07-01	62.6438560803432
2014-10-01	63.0739359747401
2015-01-01	63.3178179670627
2015-04-01	64.2891781617594
2015-07-01	64.8933540053214
2015-10-01	65.5288746846888
2016-01-01	65.6939694785002
2016-04-01	66.1008876934536
2016-07-01	66.1104922367225
2016-10-01	65.9135094149159
2017-01-01	66.5178773250303
2017-04-01	67.4359307668674
2017-07-01	67.8282606919896
2017-10-01	67.7455708347990
2018-01-01	67.9825694798612
2018-04-01	68.7349344097065