Quarter	Percent
1978-04-01	5.66590813583686
1978-07-01	4.94638609710756
1978-10-01	4.53581148859895
1979-01-01	5.57716073817361
1979-04-01	5.21931614523785
1979-07-01	5.25538645929561
1979-10-01	5.10546624824156
1980-01-01	5.32764150429586
1980-04-01	5.21867394490080
1980-07-01	4.87542263441892
1980-10-01	4.78280672046316
1981-01-01	5.36495064881857
1981-04-01	5.00087676686986
1981-07-01	4.74702661090749
1981-10-01	4.90050178013145
1982-01-01	5.66232527014289
1982-04-01	5.85235085414364
1982-07-01	5.65762292832704
1982-10-01	6.49828259586772
1983-01-01	7.66962635233898
1983-04-01	8.07960902473227
1983-07-01	7.77598955898245
1983-10-01	6.99459194161130
1984-01-01	7.71640430007126
1984-04-01	7.41253324532980
1984-07-01	6.34492861923332
1984-10-01	6.02107662666040
1985-01-01	6.91518536018462
1985-04-01	6.66069130805070
1985-07-01	6.11586277480545
1985-10-01	5.94098063816341
1986-01-01	6.99713833226524
1986-04-01	6.35250750211307
1986-07-01	6.41561883982635
1986-10-01	5.87303993835063
1987-01-01	6.99665445469429
1987-04-01	6.71681614881008
1987-07-01	6.15191061567293
1987-10-01	5.79710962998583
1988-01-01	6.63894290918832
1988-04-01	6.63658992646805
1988-07-01	5.53115090513977
1988-10-01	5.23635928209805
1989-01-01	5.90754832217232
1989-04-01	5.37979811731948
1989-07-01	4.84186836115774
1989-10-01	4.69389201987992
1990-01-01	5.41966267693351
1990-04-01	5.27118248687784
1990-07-01	5.47747514428496
1990-10-01	5.37922902615358
1991-01-01	6.98327505475493
1991-04-01	7.09379522487052
1991-07-01	6.90940474157190
1991-10-01	7.00643108433148
1992-01-01	8.13723325271482
1992-04-01	7.63555731175865
1992-07-01	7.43363466562466
1992-10-01	7.56487182545843
1993-01-01	8.50327410852444
1993-04-01	7.67706360757499
1993-07-01	7.89437416259252
1993-10-01	7.77442994478107
1994-01-01	7.94395382953163
1994-04-01	7.37329581131468
1994-07-01	7.09946924501502
1994-10-01	6.90089428723647
1995-01-01	7.26647742105717
1995-04-01	6.00399355148868
1995-07-01	5.86962955301390
1995-10-01	5.72421611820039
1996-01-01	6.39325378637279
1996-04-01	6.42299699590473
1996-07-01	6.50165819116906
1996-10-01	6.45426614533531
1997-01-01	7.23038639270563
1997-04-01	6.58801454623704
1997-07-01	6.22459891111428
1997-10-01	5.70346245665699
1998-01-01	6.34157473890738
1998-04-01	5.84033655224342
1998-07-01	5.68798538546476
1998-10-01	5.32240232622280
1999-01-01	5.84894908939698
1999-04-01	5.35094361187504
1999-07-01	5.17550055413795
1999-10-01	4.86202009339425
2000-01-01	5.83103585961229
2000-04-01	5.17037840991490
2000-07-01	4.32854057390922
2000-10-01	4.34263361329217
2001-01-01	5.07137871882259
2001-04-01	5.35941744810567
2001-07-01	5.03289729530931
2001-10-01	5.23290692448270
2002-01-01	5.50482211618221
2002-04-01	5.05161112100849
2002-07-01	4.84398552103469
2002-10-01	4.63543506167078
2003-01-01	5.38522202906546
2003-04-01	4.93619920799845
2003-07-01	4.75898358465322
2003-10-01	4.40986242245190
2004-01-01	5.04631142170375
2004-04-01	4.48781078666178
2004-07-01	4.21321788879039
2004-10-01	3.71412648059781
2005-01-01	4.54068742553597
2005-04-01	4.28086606079459
2005-07-01	3.88167247795838
2005-10-01	3.76159119198485
2006-01-01	4.59883299481109
2006-04-01	4.21889021006049
2006-07-01	3.63069363231306
2006-10-01	3.51930723567501
2007-01-01	4.43496744435115
2007-04-01	4.04882479968066
2007-07-01	3.69788403943416
2007-10-01	3.44923293163065
2008-01-01	4.14963776294209
2008-04-01	3.86336735115436
2008-07-01	3.89085212104189
2008-10-01	3.74422978831021
2009-01-01	4.84505462127302
2009-04-01	4.51190748099020
2009-07-01	4.58744066466329
2009-10-01	4.30987446744784
2010-01-01	4.68280529271275
2010-04-01	4.52729135826370
2010-07-01	4.18333078751573
2010-10-01	4.19652559521718
2011-01-01	4.61720113665126
2011-04-01	4.33027226590099
2011-07-01	4.41682927123379
2011-10-01	4.11379854591067
2012-01-01	4.60228010539387
2012-04-01	4.47063688361029
2012-07-01	4.07207263374608
2012-10-01	4.28298392546329
2013-01-01	4.89499160269198
2013-04-01	5.03240627158783
2013-07-01	4.54044068878479
2013-10-01	4.32453537263696
2014-01-01	5.44070168170922
2014-04-01	4.98962221052655
2014-07-01	5.23405211201323
2014-10-01	4.87232996658511
2015-01-01	5.58275769071129
2015-04-01	5.21237535509391
2015-07-01	5.24561892004717
2015-10-01	4.87816513160117
2016-01-01	5.61641165596217
2016-04-01	5.07540640671652
2016-07-01	4.63801937334633
2016-10-01	4.54699034340806
2017-01-01	5.55262148364656
2017-04-01	4.94571930298014
2017-07-01	4.45779462693881
2017-10-01	4.26254945561037
2018-01-01	4.95307012983446
2018-04-01	4.66954826977997
2018-07-01	4.38007729850591