Quarter	Percent
1990-01-01	84.9991324605600
1990-04-01	79.8996879685239
1990-07-01	77.0666022430553
1990-10-01	65.9203157318193
1991-01-01	81.5442069793098
1991-04-01	85.1377999897908
1991-07-01	96.2093706594866
1991-10-01	87.3837151496319
1992-01-01	98.8238934715090
1992-04-01	72.6928885953138
1992-07-01	81.1228033331194
1992-10-01	83.8901744345024
1993-01-01	102.3515364614150
1993-04-01	95.1494386870004
1993-07-01	91.4666159891205
1993-10-01	91.1284924915980
1994-01-01	105.1032711666750
1994-04-01	95.0165019139619
1994-07-01	88.9331172428055
1994-10-01	86.8484165837522
1995-01-01	96.8184484466211
1995-04-01	88.0808675890801
1995-07-01	81.8317996250731
1995-10-01	88.1280826575697
1996-01-01	89.2460870201968
1996-04-01	89.8102253664066
1996-07-01	90.0982641016164
1996-10-01	80.7055082815140
1997-01-01	83.3003181514662
1997-04-01	84.7303571618258
1997-07-01	90.3102632740379
1997-10-01	80.4101646134216
1998-01-01	83.0700180616875
1998-04-01	73.8254404061994
1998-07-01	76.9480467865850
1998-10-01	78.0797566596598
1999-01-01	85.1147788133196
1999-04-01	76.8328940782774
1999-07-01	73.0314412370014
1999-10-01	71.1621282789998
2000-01-01	76.1494889102118
2000-04-01	80.9398592887358
2000-07-01	87.0186337139733
2000-10-01	85.3029767933732
2001-01-01	97.1806807542950
2001-04-01	81.2156940285511
2001-07-01	82.6751752769383
2001-10-01	85.5057644667828
2002-01-01	95.8965630724108
2002-04-01	89.2953252155707
2002-07-01	91.7397523829291
2002-10-01	81.6475407162467
2003-01-01	89.0155498046474
2003-04-01	75.8955248271837
2003-07-01	81.7214661896617
2003-10-01	79.2865119397399
2004-01-01	88.1574902508449
2004-04-01	74.7462922846732
2004-07-01	73.6479554599000
2004-10-01	72.8660218458714
2005-01-01	78.0723376367269
2005-04-01	64.9690883462096
2005-07-01	65.9487336808177
2005-10-01	70.4950054158766
2006-01-01	76.7900454801666
2006-04-01	68.6731314234594
2006-07-01	67.6659812209842
2006-10-01	62.2379530368552
2007-01-01	74.6277799983769
2007-04-01	60.3358129043606
2007-07-01	63.3415836383976
2007-10-01	66.1064883118167
2008-01-01	70.3421838061016
2008-04-01	63.5370297421760
2008-07-01	54.6203244811478
2008-10-01	56.9533132048267
2009-01-01	75.9005469139086
2009-04-01	61.6640756095636
2009-07-01	64.8241940711156
2009-10-01	58.4024853867174
2010-01-01	63.3872722699996
2010-04-01	62.5009661599206
2010-07-01	62.3174290001981
2010-10-01	70.3829494562259
2011-01-01	75.7649274902202
2011-04-01	62.5663048753435
2011-07-01	64.3479842001697
2011-10-01	60.0826733316457
2012-01-01	63.3115605849399
2012-04-01	63.3661926566415
2012-07-01	59.3658641429406
2012-10-01	56.9761123887357
2013-01-01	65.8519528346602
2013-04-01	61.2070195255465
2013-07-01	73.5568392298155
2013-10-01	71.9951846336596
2014-01-01	74.2570105348207
2014-04-01	70.4965911857954
2014-07-01	67.5570958402152
2014-10-01	67.2560800968833
2015-01-01	73.3744471021326
2015-04-01	67.0805432504190
2015-07-01	65.2626805662643
2015-10-01	66.8585496553291
2016-01-01	77.7863009421685
2016-04-01	77.9030112445448
2016-07-01	73.0779199861591
2016-10-01	65.7371768940886
2017-01-01	71.6158985824835
2017-04-01	62.6516891331473
2017-07-01	68.3844245656572
2017-10-01	63.5925169257774
2018-01-01	66.4350626265484
2018-04-01	63.8880170812254
2018-07-01	62.4585250844426