Quarter	Percent
1998-04-01	3.53286228502866
1999-04-01	3.15357719203873
2000-04-01	2.95929298339582
2001-04-01	3.09633773498992
2002-04-01	2.94738188095390
2003-04-01	3.72125347485469
2004-04-01	4.30309873290679
2005-04-01	4.40631942730190
2006-04-01	4.22062057170779
2007-04-01	4.02829396954802
2008-04-01	3.38413397461900
2009-04-01	3.73420255046606
2010-01-01	4.49115821524769
2010-04-01	4.64049250784063
2010-07-01	4.81766282185716
2010-10-01	4.32009278051609
2011-01-01	4.44418925126321
2011-04-01	3.79052083928878
2011-07-01	4.61970539347739
2011-10-01	4.17205510261456
2012-01-01	4.08679521052336
2012-04-01	4.22009142602297
2012-07-01	4.10196471308510
2012-10-01	4.30566330488751
2013-01-01	4.71166593018118
2013-04-01	4.24528301886792
2013-07-01	4.06005150402718
2013-10-01	4.06983087834152
2014-01-01	4.73244328666015
2014-04-01	4.30919115679032
2014-07-01	4.21574375099931
2014-10-01	4.34942287513116
2015-01-01	4.14428646656135
2015-04-01	4.34074307635714
2015-07-01	4.60488317143607
2015-10-01	4.29715950473416
2016-01-01	4.95770315303768
2016-04-01	4.38076586094934
2016-07-01	4.27421020028908
2016-10-01	4.24641453580360
2017-01-01	4.87854560268880
2017-04-01	4.45337947882736
2017-07-01	4.61467702371218
2017-10-01	4.50121654501217
2018-01-01	4.90800621647366
2018-04-01	5.11241299884833