Quarter	Percent
1986-01-01	24.0227733075651
1986-04-01	24.0593265200918
1986-07-01	23.9941847893596
1986-10-01	25.3695539715893
1987-01-01	24.8275186603285
1987-04-01	24.7371319904531
1987-07-01	24.2995333605483
1987-10-01	25.6188424336273
1988-01-01	25.5173091438550
1988-04-01	25.4469374920835
1988-07-01	25.7135086249024
1988-10-01	27.5712141948714
1989-01-01	26.9565940899298
1989-04-01	26.7470819324939
1989-07-01	27.0159454290782
1989-10-01	28.4157922333491
1990-01-01	28.0658204689376
1990-04-01	27.4751036457666
1990-07-01	27.2750666729051
1990-10-01	28.7418811235594
1991-01-01	28.0317718563228
1991-04-01	26.4800906306382
1991-07-01	27.3144764156263
1991-10-01	28.5228425551730
1992-01-01	28.9376258461309
1992-04-01	28.0283460025132
1992-07-01	28.5561653049841
1992-10-01	30.6176735982100
1993-01-01	30.8254173424220
1993-04-01	29.7051498125446
1993-07-01	31.4749646985833
1993-10-01	32.0814013188506
1994-01-01	31.3030906919811
1994-04-01	30.1299078278711
1994-07-01	29.9436761925502
1994-10-01	31.7657217887096
1995-01-01	31.2520615075314
1995-04-01	29.9575122057090
1995-07-01	30.2354107080623
1995-10-01	31.4531356014345
1996-01-01	31.4680023548259
1996-04-01	30.7792689512820
1996-07-01	30.4964891900737
1996-10-01	32.2018554940615
1997-01-01	31.1932403732826
1997-04-01	31.0720367734753
1997-07-01	32.6980852201282
1997-10-01	32.7818139207874
1998-01-01	32.0916140546070
1998-04-01	31.8997367849122
1998-07-01	32.2086059665077
1998-10-01	33.5284619232580
1999-01-01	32.1568706397370
1999-04-01	30.6770340155874
1999-07-01	31.2382557328332
1999-10-01	33.0998232896967
2000-01-01	32.2736468353908
2000-04-01	31.6053900111131
2000-07-01	31.2486335155313
2000-10-01	32.4347355654483
2001-01-01	30.9702332782098
2001-04-01	30.8183973081892
2001-07-01	31.2126225596907
2001-10-01	32.6852663338864
2002-01-01	31.4851133645382
2002-04-01	30.7221443533846
2002-07-01	30.9560192922974
2002-10-01	32.6643626794794
2003-01-01	32.8608527569419
2003-04-01	32.4500310470405
2003-07-01	31.8272131010569
2003-10-01	33.9828954188430
2004-01-01	33.6682146875294
2004-04-01	33.0533850851589
2004-07-01	33.0741404872084
2004-10-01	35.6859362079245
2005-01-01	35.1280322033377
2005-04-01	34.9340396566651
2005-07-01	34.5975968950012
2005-10-01	35.7274266302657
2006-01-01	34.9749562709593
2006-04-01	34.4467792992163
2006-07-01	34.1188921847073
2006-10-01	35.7966581479988
2007-01-01	35.7868965193880
2007-04-01	35.3270489556724
2007-07-01	35.1559713793507
2007-10-01	36.7016676465336
2008-01-01	36.8342439883091
2008-04-01	36.6397451242943
2008-07-01	36.4816785184442
2008-10-01	37.9739091736053
2009-01-01	36.6443292608423
2009-04-01	36.4695842808014
2009-07-01	36.3678610242129
2009-10-01	38.0193255119916
2010-01-01	39.5338316549824
2010-04-01	40.1506213389618
2010-07-01	41.5729125905362
2010-10-01	42.6091101274147
2011-01-01	42.4565358222212
2011-04-01	43.2842402843367
2011-07-01	43.3238966994088
2011-10-01	43.9149881010009
2012-01-01	43.6092179738940
2012-04-01	43.6645140997466
2012-07-01	43.8722148821943
2012-10-01	44.2048784990341
2013-01-01	44.0484881159890
2013-04-01	44.3628331533975
2013-07-01	44.1576852300953
2013-10-01	45.1588472142419
2014-01-01	45.0310981151698
2014-04-01	44.7400079574057
2014-07-01	45.0514329060063
2014-10-01	45.4808611487393
2015-01-01	44.2406915564642
2015-04-01	44.6376484595169
2015-07-01	44.9705011621944
2015-10-01	45.8857299969919
2016-01-01	44.1861785119844
2016-04-01	44.5346384307853
2016-07-01	44.5920463348315
2016-10-01	45.3300811357586
2017-01-01	44.1127355521227
2017-04-01	44.6133277787195
2017-07-01	45.4502327670907
2017-10-01	45.9608205031976
2018-01-01	45.3750298035635
2018-04-01	45.1883291246154
2018-07-01	44.9435949213272