Quarter	Percent, Seasonally Adjusted
1998-01-01	58.8478043291507
1998-04-01	58.8136003159704
1998-07-01	57.6938639140983
1998-10-01	57.6551494954025
1999-01-01	56.7830321497601
1999-04-01	56.4798917547571
1999-07-01	57.0998408594047
1999-10-01	56.7173112037409
2000-01-01	55.6380421525110
2000-04-01	54.7297001804679
2000-07-01	53.8877291567040
2000-10-01	52.3524170419847
2001-01-01	51.1894385033441
2001-04-01	50.0651678060141
2001-07-01	48.8431889461763
2001-10-01	48.6641158257321
2002-01-01	48.9181336472677
2002-04-01	48.3935463139582
2002-07-01	46.9225017139578
2002-10-01	47.4232995010775
2003-01-01	47.1946357932527
2003-04-01	46.1217983135516
2003-07-01	45.3474160206660
2003-10-01	46.3830002362307
2004-01-01	45.6726442137989
2004-04-01	44.4350019828025
2004-07-01	45.3173715000536
2004-10-01	44.9190574801115
2005-01-01	43.9137052507873
2005-04-01	43.8444878438832
2005-07-01	43.0053264115544
2005-10-01	42.7125626815466
2006-01-01	42.0836358578438
2006-04-01	41.8342361700590
2006-07-01	41.5087956771894
2006-10-01	40.5587985339792
2007-01-01	41.1964451370311
2007-04-01	41.2539530613603
2007-07-01	41.0241468093174
2007-10-01	41.4719452626619
2008-01-01	41.0859955423103
2008-04-01	40.2431312086431
2008-07-01	39.9666309250148
2008-10-01	39.9910091417974
2009-01-01	40.7938181641793
2009-04-01	40.8779288893385
2009-07-01	40.4954969509752
2009-10-01	41.2769090367792
2010-01-01	40.1901027070960
2010-04-01	39.7531164485585
2010-07-01	39.8884836716987
2010-10-01	39.4731437633052
2011-01-01	39.5914173409416
2011-04-01	38.7848025395664
2011-07-01	39.4421603324956
2011-10-01	38.6675709648070
2012-01-01	38.3266087995552
2012-04-01	37.6613082412230
2012-07-01	37.1852066924258
2012-10-01	37.7390583050764
2013-01-01	37.1961974005772
2013-04-01	37.0665626670957
2013-07-01	36.8231092139273
2013-10-01	37.2937737374953
2014-01-01	36.5892082912283
2014-04-01	36.4688386466054
2014-07-01	36.5415648959746
2014-10-01	35.3488353376563
2015-01-01	35.6043120899243
2015-04-01	35.2106766235185
2015-07-01	34.2236435449176
2015-10-01	34.1357779695423
2016-01-01	34.2564833311322
2016-04-01	33.8198282953036
2016-07-01	32.9982178412497
2016-10-01	33.3057167428203
2017-01-01	33.2792281120826
2017-04-01	32.0590227560531
2017-07-01	32.4123138675783
2017-10-01	30.8974568109382
2018-01-01	29.2467785114077
2018-04-01	30.1521058475104