Quarter	Percent, Seasonally Adjusted
1998-04-01	65.5448964585578
1999-04-01	65.7261015333821
2000-04-01	65.5701124165328
2001-04-01	66.1126779478915
2002-04-01	65.7409096184776
2003-04-01	65.0525279054498
2004-04-01	64.3709556791207
2005-04-01	64.0047023205630
2006-04-01	64.6610061287028
2007-04-01	65.1586285389102
2008-04-01	65.9030342699518
2009-04-01	65.4290138124511
2010-01-01	63.4926762567158
2010-04-01	63.6761344242045
2010-07-01	63.9477987880797
2010-10-01	63.9908375168226
2011-01-01	64.4150408437344
2011-04-01	64.5593304081089
2011-07-01	64.3732778192313
2011-10-01	64.5758538186964
2012-01-01	64.5749650076047
2012-04-01	64.5083269753876
2012-07-01	64.6623929111214
2012-10-01	64.2180961359703
2013-01-01	64.2985495896847
2013-04-01	64.2286121353355
2013-07-01	64.3093374251992
2013-10-01	64.4861390610415
2014-01-01	64.1230695864166
2014-04-01	64.5011441785679
2014-07-01	64.5621373457457
2014-10-01	65.3348768645574
2015-01-01	65.0923784092022
2015-04-01	64.7679473935092
2015-07-01	64.6406868805517
2015-10-01	65.0014938542563
2016-01-01	65.2688980085765
2016-04-01	65.0296003150462
2016-07-01	65.1216439314998
2016-10-01	65.3654557964666
2017-01-01	65.1867932630375
2017-04-01	65.1798797775737
2017-07-01	65.0750159459165
2017-10-01	65.2022430423970
2018-01-01	65.2358934614104
2018-04-01	65.1406750275443