Quarter	Percent
1991-01-01	6.43520545990602
1991-04-01	5.94457113132109
1991-07-01	5.80777433505740
1991-10-01	6.05873995209951
1992-01-01	7.18049218296474
1992-04-01	6.67194109857431
1992-07-01	6.51797883753341
1992-10-01	6.67499721149061
1993-01-01	7.43911896916739
1993-04-01	6.91730192003205
1993-07-01	6.62235021940954
1993-10-01	6.74106891851252
1994-01-01	7.51450126688502
1994-04-01	6.69166245338265
1994-07-01	6.34991373555758
1994-10-01	6.18449677207473
1995-01-01	6.77869696539191
1995-04-01	6.30425860904298
1995-07-01	6.12202235625870
1995-10-01	6.23544053902418
1996-01-01	7.01671267410195
1996-04-01	6.49109781273360
1996-07-01	6.14310800541552
1996-10-01	6.19023190144148
1997-01-01	6.85118729460904
1997-04-01	6.18387213799629
1997-07-01	5.88080263251577
1997-10-01	5.85832577020300
1998-01-01	6.48661496699923
1998-04-01	5.97729572607985
1998-07-01	5.85974622666349
1998-10-01	5.85561107671097
1999-01-01	6.40498579791476
1999-04-01	5.90691532545674
1999-07-01	5.59276132456047
1999-10-01	5.49815604000008
2000-01-01	6.02333003507188
2000-04-01	5.37466326175780
2000-07-01	5.14837587656514
2000-10-01	5.18045118065971
2001-01-01	5.87105674767062
2001-04-01	5.55628744743099
2001-07-01	5.56671309833358
2001-10-01	6.10477969842375
2002-01-01	6.86290941905352
2002-04-01	6.35827938709033
2002-07-01	6.16988386068037
2002-10-01	6.38978622861418
2003-01-01	7.19449951581546
2003-04-01	6.75825845486320
2003-07-01	6.41800437298467
2003-10-01	6.37548571829677
2004-01-01	6.92131343700358
2004-04-01	6.27644442535640
2004-07-01	6.03566578786714
2004-10-01	6.21493250532876
2005-01-01	6.86834343828258
2005-04-01	6.04510655039541
2005-07-01	5.75788260753482
2005-10-01	5.85470009432101
2006-01-01	6.35512649598802
2006-04-01	5.65884381658558
2006-07-01	5.42832409036709
2006-10-01	5.44870155922901
2007-01-01	5.92344858025430
2007-04-01	5.19391222228990
2007-07-01	5.08427223845143
2007-10-01	5.19275947590965
2008-01-01	5.85025791570509
2008-04-01	5.55580648465511
2008-07-01	5.71489677459608
2008-10-01	6.42151712738450
2009-01-01	8.35970776707352
2009-04-01	8.48260707772429
2009-07-01	8.49973796498783
2009-10-01	8.67750697792534
2010-01-01	9.61159973092631
2010-04-01	8.54321652835181
2010-07-01	8.10999794312918
2010-10-01	8.12219369586352
2011-01-01	8.53294557577863
2011-04-01	7.78504645718625
2011-07-01	7.51607827185349
2011-10-01	7.50923445771920
2012-01-01	8.06579427266283
2012-04-01	7.42161185559082
2012-07-01	7.14179633022599
2012-10-01	7.17502345887275
2013-01-01	7.95584526954994
2013-04-01	7.30464485783117
2013-07-01	7.05130071232459
2013-10-01	6.83931170571414
2014-01-01	7.28810456395622
2014-04-01	6.42035275651586
2014-07-01	6.15521718896775
2014-10-01	6.08894505517842
2015-01-01	6.57793047608158
2015-04-01	5.98216604731866
2015-07-01	5.59636792303281
2015-10-01	5.66632051993660
2016-01-01	6.04529848498227
2016-04-01	5.45417039323337
2016-07-01	5.36054556410315
2016-10-01	5.39084129177151
2017-01-01	5.64472346515895
2017-04-01	4.94584016090480
2017-07-01	4.83699338326948
2017-10-01	4.74351314799359
2018-01-01	5.08454657272796