Quarter	Percent
1998-04-01	2.93704108733010
1999-04-01	2.25062086092715
2000-04-01	1.76012461059190
2001-04-01	1.09475858507617
2002-04-01	2.10259854316268
2003-04-01	3.11415152133960
2004-04-01	3.32060096765979
2005-04-01	3.19739320808513
2006-04-01	2.68123640410786
2007-04-01	2.30045311955385
2008-04-01	2.22418185381148
2009-04-01	3.14567948594994
2010-01-01	4.88634155818924
2010-04-01	3.78412209330316
2010-07-01	3.62385100341691
2010-10-01	3.59137300211824
2011-01-01	3.93253058103976
2011-04-01	3.40207165257056
2011-07-01	3.19284802043423
2011-10-01	3.64374380516354
2012-01-01	3.90181611804767
2012-04-01	3.32519256058614
2012-07-01	3.51163549876417
2012-10-01	3.69852804173654
2013-01-01	4.38113031293788
2013-04-01	3.91856087017152
2013-07-01	4.01185953858983
2013-10-01	3.60248447204969
2014-01-01	4.57492298496483
2014-04-01	4.07493504717626
2014-07-01	4.07332906647161
2014-10-01	3.70370370370370
2015-01-01	4.49025319291956
2015-04-01	3.84995064165844
2015-07-01	4.01795735129068
2015-10-01	3.90146471371505
2016-01-01	4.79555555555556
2016-04-01	4.23056583818086
2016-07-01	4.13647740745620
2016-10-01	4.01177607874154
2017-01-01	4.86782294011210
2017-04-01	3.68911645004595
2017-07-01	3.77143857192860
2017-10-01	3.94032966555038
2018-01-01	4.55279584442795
2018-04-01	3.74308437067773