Quarter	Percent
1998-04-01	11.91796617614760
1999-04-01	11.04763957749520
2000-04-01	10.56510052440850
2001-04-01	9.61320230455150
2002-04-01	9.79272357727680
2003-04-01	9.74924047067847
2004-04-01	9.89483341209129
2005-01-01	9.96528830264689
2005-04-01	9.56394351300723
2005-07-01	9.50732694256822
2005-10-01	9.70762749047974
2006-01-01	9.57018433885743
2006-04-01	8.80599100659861
2006-07-01	8.74263839811543
2006-10-01	8.64317587614236
2007-01-01	8.37475896306456
2007-04-01	7.70555211096131
2007-07-01	7.57017435159710
2007-10-01	7.58705760797361
2008-01-01	7.56132669753851
2008-04-01	7.28497433396047
2008-07-01	7.30092958942750
2008-10-01	7.66063612300872
2009-01-01	8.67079746607338
2009-04-01	8.63349267529146
2009-07-01	8.84205813106373
2009-10-01	9.12940091052374
2010-01-01	9.72281438035955
2010-04-01	9.36513714125111
2010-07-01	9.31321626158567
2010-10-01	9.59683967473514
2011-01-01	9.81023050554770
2011-04-01	9.36838424966207
2011-07-01	9.60451667316140
2011-10-01	10.04328719925250
2012-01-01	10.52777838719350
2012-04-01	10.25311410878980
2012-07-01	10.36305211445200
2012-10-01	10.82321894967060
2013-01-01	11.27133162290380
2013-04-01	10.79082958087980
2013-07-01	10.61667850388380
2013-10-01	10.82221242362340
2014-01-01	10.93447183939740
2014-04-01	10.20123166498710
2014-07-01	10.03412999736780
2014-10-01	10.16243825804590
2015-01-01	10.12646888621740
2015-04-01	9.49018034285205
2015-07-01	9.14119873007728
2015-10-01	9.26371162209016
2016-01-01	9.26316895495170
2016-04-01	8.74152703816266
2016-07-01	8.53382830921622
2016-10-01	8.46327097093105
2017-01-01	8.48728763612160
2017-04-01	7.74599770014141
2017-07-01	7.65156407952376
2017-10-01	7.58496105768386
2018-01-01	7.65622976968600
2018-04-01	7.00697638129369