Quarter	Percent
2005-01-01	9.89214372327526
2005-04-01	8.88591630040130
2005-07-01	7.33094720695385
2005-10-01	7.17863105175292
2006-01-01	6.72937771345876
2006-04-01	5.55482513804891
2006-07-01	5.73883386895783
2006-10-01	5.09265431275830
2007-01-01	5.14304723885562
2007-04-01	4.08216840585417
2007-07-01	3.81813451281384
2007-10-01	3.97386318175757
2008-01-01	4.97786126392057
2008-04-01	4.56484073037452
2008-07-01	5.87239583333333
2008-10-01	7.83368091762252
2009-01-01	12.11920967422190
2009-04-01	13.76182707993470
2009-07-01	13.73897249610790
2009-10-01	15.50921371893240
2010-01-01	18.21832541329230
2010-04-01	18.18967235993890
2010-07-01	17.65665796344650
2010-10-01	17.21050924424260
2011-01-01	17.14381720430110
2011-04-01	15.57755334091360
2011-07-01	14.93252361673410
2011-10-01	13.87615463564830
2012-01-01	14.52769619561510
2012-04-01	13.27164662974470
2012-07-01	12.50421300977420
2012-10-01	13.16689466484270
2013-01-01	13.11025781678550
2013-04-01	11.69582680917690
2013-07-01	10.87341599672980
2013-10-01	11.40674034656840
2014-01-01	12.40278623114900
2014-04-01	11.22262155014580
2014-07-01	9.12030176478513
2014-10-01	10.05305400625770
2015-01-01	9.96378049613886
2015-04-01	9.36037441497660
2015-07-01	8.33390026532417
2015-10-01	8.82152588555858
2016-01-01	8.31466775266409
2016-04-01	8.01049233252623
2016-07-01	7.50152057849564
2016-10-01	7.61697497279652
2017-01-01	8.04511278195489
2017-04-01	6.97610921501706
2017-07-01	6.56673313621674
2017-10-01	6.69932385814820
2018-01-01	7.16057891109580
2018-04-01	5.90334980779791