Quarter	Percent
1998-04-01	11.13666386143690
1999-04-01	10.26980433224210
2000-04-01	9.12491559171114
2001-04-01	7.99282261882321
2002-04-01	8.35572221452845
2003-04-01	8.82354944852816
2004-04-01	9.08028506772047
2005-01-01	9.42427936607810
2005-04-01	8.91975286508434
2005-07-01	8.61497542747612
2005-10-01	8.89495101342595
2006-01-01	9.02205591452435
2006-04-01	8.16151955918035
2006-07-01	7.81413530204169
2006-10-01	8.01538377786388
2007-01-01	7.95981060257730
2007-04-01	7.24839850199126
2007-07-01	7.07263881899010
2007-10-01	7.23745143558223
2008-01-01	7.48776522435236
2008-04-01	7.25141155912892
2008-07-01	7.15040255182772
2008-10-01	7.87432965393757
2009-01-01	9.32679467407793
2009-04-01	9.34798821338156
2009-07-01	9.41067505684083
2009-10-01	9.88937917086445
2010-01-01	10.55621001963390
2010-04-01	10.01929584089910
2010-07-01	9.68107027759108
2010-10-01	10.03061801439780
2011-01-01	10.39584988312570
2011-04-01	9.76732138457359
2011-07-01	9.81274806906697
2011-10-01	10.54034925396030
2012-01-01	11.36283283998030
2012-04-01	11.08967784484290
2012-07-01	11.03103547447260
2012-10-01	11.75113969228310
2013-01-01	12.51486107599520
2013-04-01	11.86116141555020
2013-07-01	11.52069959182140
2013-10-01	11.87261963474340
2014-01-01	12.34570983150870
2014-04-01	11.45350553459570
2014-07-01	11.09558659079050
2014-10-01	11.52354965295740
2015-01-01	11.63510891843630
2015-04-01	10.89753381243860
2015-07-01	10.26189521957780
2015-10-01	10.58378406458370
2016-01-01	10.68441043479980
2016-04-01	10.01466176298460
2016-07-01	9.58268012927146
2016-10-01	9.76088547653433
2017-01-01	9.83306083495476
2017-04-01	8.98441987165114
2017-07-01	8.65946550549367
2017-10-01	8.69747300629288
2018-01-01	8.89950615208994
2018-04-01	8.16665301686993