Quarter	Percent
1998-04-01	9.33012492137392
1999-04-01	8.54893937817127
2000-04-01	7.52087342596942
2001-04-01	6.73990259805599
2002-04-01	7.24692802078995
2003-04-01	7.83987460059082
2004-04-01	8.16517728452004
2005-01-01	8.67772766650780
2005-04-01	8.16582357893656
2005-07-01	7.70556316137220
2005-10-01	7.93394726419817
2006-01-01	8.21160922374132
2006-04-01	7.35869285828414
2006-07-01	6.85679625644893
2006-10-01	7.12693670518265
2007-01-01	7.21119083375049
2007-04-01	6.41282057773614
2007-07-01	6.25639178066886
2007-10-01	6.41068944394511
2008-01-01	6.84438983498501
2008-04-01	6.59881441198327
2008-07-01	6.48797748802518
2008-10-01	7.37681838442080
2009-01-01	9.15687094869929
2009-04-01	9.27378036982464
2009-07-01	9.24564203079017
2009-10-01	9.83278955487276
2010-01-01	10.61942189759390
2010-04-01	9.96330992134868
2010-07-01	9.45981241014594
2010-10-01	9.74668277822532
2011-01-01	10.24468072717110
2011-04-01	9.63949088487124
2011-07-01	9.50289180681758
2011-10-01	10.31594460067070
2012-01-01	11.29103454684850
2012-04-01	11.01432727012170
2012-07-01	10.80528428232270
2012-10-01	11.57837430088340
2013-01-01	12.54575065905330
2013-04-01	11.79318236987200
2013-07-01	11.38135037238270
2013-10-01	11.62693486980450
2014-01-01	12.37907642994940
2014-04-01	11.35954990005090
2014-07-01	10.78870630999560
2014-10-01	11.27750649900140
2015-01-01	11.56530028598670
2015-04-01	10.80191850615760
2015-07-01	10.02983778219220
2015-10-01	10.32649125223860
2016-01-01	10.48569521496530
2016-04-01	9.69914210637149
2016-07-01	9.17212511142979
2016-10-01	9.46207412680594
2017-01-01	9.52435005744399
2017-04-01	8.69895705647508
2017-07-01	8.25430726964289
2017-10-01	8.34636428045858
2018-01-01	8.57657464339890
2018-04-01	7.85406266378500