Quarter	Percent, Seasonally Adjusted
1998-04-01	73.8000000000000
1999-04-01	73.7000000000000
2000-04-01	73.4000000000000
2001-04-01	73.9000000000000
2002-04-01	74.0000000000000
2003-04-01	74.1000000000000
2004-04-01	73.6000000000000
2005-04-01	73.4000000000000
2006-04-01	73.9000000000000
2007-04-01	74.2000000000000
2008-04-01	74.8000000000000
2009-04-01	74.9000000000000
2010-01-01	73.5603485137710
2010-04-01	73.5975523732589
2010-07-01	73.7193763302136
2010-10-01	73.5932066937897
2011-01-01	74.1453170479803
2011-04-01	74.0644924694066
2011-07-01	74.1145546426279
2011-10-01	74.4700834364229
2012-01-01	74.2053250051286
2012-04-01	74.0693353127304
2012-07-01	74.4707078661801
2012-10-01	74.3841821959065
2013-01-01	74.3714042116244
2013-04-01	74.1779604806127
2013-07-01	74.2310324030609
2013-10-01	74.4257540985553
2014-01-01	74.3470532765675
2014-04-01	74.7042993101446
2014-07-01	74.6506781565082
2014-10-01	75.2870331101873
2015-01-01	75.0356622016954
2015-04-01	74.8493326046646
2015-07-01	74.8168446295332
2015-10-01	75.4388662576402
2016-01-01	75.7264290677804
2016-04-01	75.3232938546014
2016-07-01	75.4946827081282
2016-10-01	75.7170721961840
2017-01-01	75.6718415137456
2017-04-01	75.3912635577774
2017-07-01	75.5465454342618
2017-10-01	75.6663701590974
2018-01-01	75.8044466309332
2018-04-01	75.8257563709710