Quarter	Percent
1999-04-01	3.14490645533430
2000-04-01	2.66499372647428
2001-04-01	2.49090053730161
2002-04-01	2.92338956491933
2003-04-01	4.11555491035784
2004-04-01	4.31640766609469
2005-04-01	4.43616253907189
2006-04-01	3.99981043552438
2007-04-01	3.65098286702662
2008-04-01	3.35055080678338
2009-04-01	4.11574406901510
2010-01-01	5.39691929648927
2010-04-01	4.63793728475621
2010-07-01	4.92385900982972
2010-10-01	4.27041438835917
2011-01-01	4.70121841963806
2011-04-01	3.91503633314701
2011-07-01	4.60483996184815
2011-10-01	4.40586861699784
2012-01-01	4.53901650953835
2012-04-01	4.06473549412700
2012-07-01	4.65020038334205
2012-10-01	4.68180727359993
2013-01-01	5.13664298478839
2013-04-01	4.52446303315471
2013-07-01	4.88765747434954
2013-10-01	4.43799074970421
2014-01-01	5.31621575047389
2014-04-01	4.66115278579214
2014-07-01	5.05157928320749
2014-10-01	4.28826557411493
2015-01-01	4.72518907076197
2015-04-01	4.43919318085914
2015-07-01	5.15758109866129
2015-10-01	4.87875768144826
2016-01-01	5.33995653523750
2016-04-01	4.62711054806754
2016-07-01	5.10778751933987
2016-10-01	4.59998769508419
2017-01-01	5.26803741398492
2017-04-01	4.39422343997857
2017-07-01	4.98371535672586
2017-10-01	4.54248098781585
2018-01-01	5.22600315115304
2018-04-01	4.61830580452847