Quarter	Percent, Seasonally Adjusted
1978-04-01	49.4595808999356
1978-07-01	49.4737351078189
1978-10-01	49.6542747375462
1979-01-01	49.6040118783435
1979-04-01	49.7274933857993
1979-07-01	49.5807561296204
1979-10-01	48.8030210134609
1980-01-01	48.4239377633903
1980-04-01	48.0645961561143
1980-07-01	47.5716912794644
1980-10-01	47.9553500442882
1981-01-01	48.2001524146247
1981-04-01	48.0198507706296
1981-07-01	47.6734132263470
1981-10-01	47.7707289550406
1982-01-01	47.7048471884599
1982-04-01	48.0057373408730
1982-07-01	48.1888603239346
1982-10-01	47.7750259496762
1983-01-01	47.9152758584374
1983-04-01	48.0384973627102
1983-07-01	47.6696177783037
1983-10-01	47.6387010856880
1984-01-01	47.4619400467285
1984-04-01	46.8601699635127
1984-07-01	46.9016365700819
1984-10-01	46.6502528953592
1985-01-01	46.1922859545061
1985-04-01	46.1637809037975
1985-07-01	45.4989292421261
1985-10-01	44.8515475241305
1986-01-01	44.0889297062849
1986-04-01	43.1593077950340
1986-07-01	42.9467852483907
1986-10-01	42.6852873037898
1987-01-01	42.6048149417770
1987-04-01	42.4282674264331
1987-07-01	42.3524057516184
1987-10-01	42.1138690258523
1988-01-01	41.5596093276750
1988-04-01	41.1555661852158
1988-07-01	41.2240185000155
1988-10-01	40.7898297740233
1989-01-01	40.1686113715959
1989-04-01	39.5787073190834
1989-07-01	39.1951595721803
1989-10-01	38.7751706307051
1990-01-01	38.5048063375614
1990-04-01	38.0916194009390
1990-07-01	37.9272214395108
1990-10-01	38.1182732908920
1991-01-01	38.3064383663348
1991-04-01	38.0131094660743
1991-07-01	38.4386579809592
1991-10-01	38.6932254617819
1992-01-01	38.2551795986885
1992-04-01	38.3660811368217
1992-07-01	38.0762757986379
1992-10-01	38.2745986755706
1993-01-01	38.3773447973176
1993-04-01	38.8927798610084
1993-07-01	38.4661025064398
1993-10-01	37.6615315230289
1994-01-01	37.5663079580954
1994-04-01	37.5606690387837
1994-07-01	36.9087824300049
1994-10-01	36.9169243608292
1995-01-01	36.5545256444442
1995-04-01	36.0308638670902
1995-07-01	35.9183672419767
1995-10-01	35.4785892116552
1996-01-01	35.5947599756671
1996-04-01	35.7928228161891
1996-07-01	35.6683559345697
1996-10-01	35.7681186650453
1997-01-01	35.6314905455429
1997-04-01	35.9645818874607
1997-07-01	36.1082255308589
1997-10-01	36.1242048971864
1998-01-01	36.2022378384562
1998-04-01	35.9132116632943
1998-07-01	35.6291194353676
1998-10-01	35.6896289814854
1999-01-01	36.0633469199728
1999-04-01	36.0981182641440
1999-07-01	35.8712016322778
1999-10-01	35.3350813811687
2000-01-01	35.2756798010824
2000-04-01	34.6770647297283
2000-07-01	34.2288994927104
2000-10-01	34.8203985551499
2001-01-01	34.6258193453028
2001-04-01	33.6510062314566
2001-07-01	34.0234324906276
2001-10-01	33.9157119035444
2002-01-01	33.9896945568642
2002-04-01	34.3754095210358
2002-07-01	33.7733058939565
2002-10-01	33.2677530830814
2003-01-01	32.6369283945907
2003-04-01	32.8735433405054
2003-07-01	33.1447280642306
2003-10-01	33.2815101178733
2004-01-01	33.5430103305861
2004-04-01	33.4624334264122
2004-07-01	33.2773366215286
2004-10-01	32.7928026711377
2005-01-01	32.1532021991722
2005-04-01	31.8194280694967
2005-07-01	31.6737714970024
2005-10-01	31.6375736131193
2006-01-01	31.5716056089241
2006-04-01	31.1704969421055
2006-07-01	30.8765264838474
2006-10-01	30.9224499013029
2007-01-01	30.7988698174936
2007-04-01	30.7729076863257
2007-07-01	30.5382207496159
2007-10-01	30.2089053721006
2008-01-01	30.2470628880361
2008-04-01	29.9659829303256
2008-07-01	29.9686294145751
2008-10-01	30.0004366486185
2009-01-01	29.4778338030811
2009-04-01	29.6984368919406
2009-07-01	30.1616323652244
2009-10-01	30.0663627026765
2010-01-01	30.2741767231444
2010-04-01	30.3317579350942
2010-07-01	29.9132411180504
2010-10-01	29.5994263128505
2011-01-01	29.6257424834064
2011-04-01	29.6439874731946
2011-07-01	29.3525986592465
2011-10-01	29.5628877937780
2012-01-01	29.6192221598702
2012-04-01	29.5442607701165
2012-07-01	29.5973682134128
2012-10-01	29.6684165231689
2013-01-01	29.4606881634992
2013-04-01	29.4313967849645
2013-07-01	29.5574601665502
2013-10-01	29.7282083630357
2014-01-01	29.4812145007615
2014-04-01	29.5511737163727
2014-07-01	29.3525400043534
2014-10-01	29.4774733125175
2015-01-01	29.1760270774582
2015-04-01	28.9613791014753
2015-07-01	28.6480426411295
2015-10-01	28.1913486069982
2016-01-01	28.3119739773493
2016-04-01	28.2507681860352
2016-07-01	28.4840116270481
2016-10-01	28.4261112088659
2017-01-01	28.2188081495868
2017-04-01	27.8618628852204
2017-07-01	27.5070456333069
2017-10-01	27.0034025473149
2018-01-01	26.7443866974034
2018-04-01	26.7480236944566
2018-07-01	26.8890549261210