Quarter	Percent
1998-01-01	7.27803942089656
1998-04-01	7.55129719560747
1998-07-01	8.79341147762430
1998-10-01	9.20131385599447
1999-01-01	10.00563820098020
1999-04-01	10.12021004209520
1999-07-01	11.09526279391420
1999-10-01	10.64242319789740
2000-01-01	11.05183257427890
2000-04-01	10.52792187976810
2000-07-01	10.40631266893360
2000-10-01	10.14499063874250
2001-01-01	10.13955516790230
2001-04-01	9.60700611715002
2001-07-01	10.06761503336850
2001-10-01	9.58698814298938
2002-01-01	9.23766020666105
2002-04-01	8.55108988813724
2002-07-01	9.09490527056134
2002-10-01	9.21179249409500
2003-01-01	9.55901769210457
2003-04-01	9.63839521379553
2003-07-01	10.18249140439040
2003-10-01	10.11799929552660
2004-01-01	10.27134348113830
2004-04-01	9.65164024901762
2004-07-01	9.81949777130500
2004-10-01	9.85934065934066
2005-01-01	9.61478788953411
2005-04-01	9.77059574655454
2005-07-01	9.83956752986311
2005-10-01	9.93931512787169
2006-01-01	9.67362412305547
2006-04-01	8.79552799371124
2006-07-01	8.78021065512871
2006-10-01	8.12623274161736
2007-01-01	7.59030837004405
2007-04-01	6.54596713801154
2007-07-01	6.48651035457235
2007-10-01	6.32515526582390
2008-01-01	5.98237612363282
2008-04-01	5.20277128105556
2008-07-01	5.59992939411323
2008-10-01	5.66444014765337
2009-01-01	6.78862684593344
2009-04-01	7.39410399053835
2009-07-01	8.50156630699617
2009-10-01	8.21882066446338
2010-01-01	8.83659555751044
2010-04-01	8.31022492187156
2010-07-01	8.52499233363999
2010-10-01	8.15070287260980
2011-01-01	8.21639749360162
2011-04-01	7.93050362876622
2011-07-01	7.83092910071469
2011-10-01	7.60115860616168
2012-01-01	8.08490025980889
2012-04-01	7.88749617853867
2012-07-01	8.36215842269111
2012-10-01	8.48120300751880
2013-01-01	8.52091418714964
2013-04-01	8.13511551436990
2013-07-01	8.41552452926860
2013-10-01	8.08054951149793
2014-01-01	8.02014722975591
2014-04-01	7.36901213770464
2014-07-01	7.33413440906360
2014-10-01	6.85899072419368
2015-01-01	6.88507806501152
2015-04-01	5.92747262112754
2015-07-01	5.98308757914418
2015-10-01	5.50223928342930
2016-01-01	5.04994686503719
2016-04-01	4.56850646606373
2016-07-01	4.84284932890142
2016-10-01	4.23293675641828
2017-01-01	4.27210541776826
2017-04-01	3.70074435426216
2017-07-01	3.45715947810189
2017-10-01	2.89359573048699
2018-01-01	2.97847488736860
2018-04-01	2.73176402208660