Quarter	Percent
1998-04-01	8.86342710997442
1999-04-01	8.20243792694400
2000-04-01	8.17793534363482
2001-04-01	7.73141200600268
2002-04-01	8.22994140791755
2003-04-01	8.39735924898873
2004-04-01	8.60010860462060
2005-01-01	8.82980859717995
2005-04-01	8.29945799457994
2005-07-01	7.90297120551162
2005-10-01	8.02637725390053
2006-01-01	8.32194588685433
2006-04-01	7.54699574541981
2006-07-01	7.13435662628729
2006-10-01	7.15411226735779
2007-01-01	7.23194135713437
2007-04-01	6.47118719645480
2007-07-01	6.26336188675723
2007-10-01	6.27766826847865
2008-01-01	6.63575775137641
2008-04-01	6.34417388213960
2008-07-01	6.26071846958370
2008-10-01	6.97923412076755
2009-01-01	8.64431529096876
2009-04-01	8.81411060576340
2009-07-01	8.89285936284758
2009-10-01	9.32233068545004
2010-01-01	10.26140823393610
2010-04-01	9.55152072320539
2010-07-01	9.07756270561644
2010-10-01	9.31711604747376
2011-01-01	9.85265520917526
2011-04-01	9.28560506461004
2011-07-01	9.18049057681719
2011-10-01	9.77355802446226
2012-01-01	10.64558244145160
2012-04-01	10.24874077087920
2012-07-01	10.03122610974400
2012-10-01	10.55217710814230
2013-01-01	11.48352644960170
2013-04-01	10.80098932661150
2013-07-01	10.36636890850600
2013-10-01	10.45533620523610
2014-01-01	11.04023316032450
2014-04-01	10.07145894196880
2014-07-01	9.51065117487500
2014-10-01	9.80795303071156
2015-01-01	10.13672389252880
2015-04-01	9.43781364025064
2015-07-01	8.76066938203968
2015-10-01	8.86533569605082
2016-01-01	9.08675261548978
2016-04-01	8.38749262322891
2016-07-01	7.92688109603137
2016-10-01	8.04282648785841
2017-01-01	8.13139451858342
2017-04-01	7.44898934085419
2017-07-01	7.03858610589100
2017-10-01	7.03356673319126
2018-01-01	7.19422179718170
2018-04-01	6.60284933308609