Quarter	Percent
1998-04-01	4.13777424121860
1999-04-01	3.56940830410680
2000-04-01	3.13333711755690
2001-04-01	3.45646292308542
2002-04-01	3.09657860545691
2003-04-01	4.48759092854086
2004-04-01	4.76190476190476
2005-04-01	5.09188563003528
2006-04-01	4.70881086967796
2007-04-01	4.51586447280742
2008-04-01	3.96593553498044
2009-04-01	4.52202664592045
2010-01-01	5.42535797453302
2010-04-01	5.09895342492932
2010-07-01	5.60554654078773
2010-10-01	4.62442009673280
2011-01-01	4.99097428892033
2011-04-01	3.99006138555978
2011-07-01	5.38599640933573
2011-10-01	4.83175150992235
2012-01-01	4.65762614404140
2012-04-01	4.51823103828278
2012-07-01	4.83962801290567
2012-10-01	4.90312752891893
2013-01-01	5.20192944292065
2013-04-01	4.83064440041513
2013-07-01	5.03044496487119
2013-10-01	4.61130001397364
2014-01-01	5.24991847952672
2014-04-01	4.76234425473004
2014-07-01	5.31768588979554
2014-10-01	4.62347232207045
2015-01-01	4.45793503375164
2015-04-01	4.55969844225442
2015-07-01	5.47481494854667
2015-10-01	5.15404164251638
2016-01-01	5.15701017249005
2016-04-01	4.75086906141367
2016-07-01	5.29471860702705
2016-10-01	4.82251387298511
2017-01-01	5.15881756905591
2017-04-01	4.80645590387088
2017-07-01	5.40444916191234
2017-10-01	4.86419861777523
2018-01-01	5.40894792030758
2018-04-01	5.22895903762568