Quarter	Percent
2005-01-01	13.4832395643789
2005-04-01	13.3208456650401
2005-07-01	13.2185450339344
2005-10-01	12.5855016019371
2006-01-01	12.7433550263054
2006-04-01	12.3528802327632
2006-07-01	12.8260337290674
2006-10-01	12.0019110718712
2007-01-01	12.0003496337083
2007-04-01	11.5080637739712
2007-07-01	12.1289801500696
2007-10-01	11.3097194943932
2008-01-01	11.6299343172491
2008-04-01	12.2064688491957
2008-07-01	12.9427264125802
2008-10-01	12.4214485243547
2009-01-01	14.2603966452398
2009-04-01	15.3049249903834
2009-07-01	16.4272865433948
2009-10-01	15.0747456828155
2010-01-01	15.5759187428346
2010-04-01	15.9246887596574
2010-07-01	16.3496285098101
2010-10-01	15.4855566824560
2011-01-01	15.9102856432743
2011-04-01	15.7088683243899
2011-07-01	16.4466446186236
2011-10-01	15.0629265818265
2012-01-01	15.8091523844788
2012-04-01	15.6729996395212
2012-07-01	16.1066940423580
2012-10-01	15.6879000584040
2013-01-01	16.2255973383144
2013-04-01	15.8149127121723
2013-07-01	15.8124601498468
2013-10-01	14.8842204376571
2014-01-01	15.2701226315208
2014-04-01	14.2684236564327
2014-07-01	14.9100708054488
2014-10-01	14.0469663990843
2015-01-01	13.9734388710694
2015-04-01	13.6334189130940
2015-07-01	13.7802294679531
2015-10-01	12.3853616489120
2016-01-01	12.6566554726642
2016-04-01	12.7229300734177
2016-07-01	12.8679327981171
2016-10-01	11.7354389523130
2017-01-01	11.8272529228730
2017-04-01	11.6495607086278
2017-07-01	11.7421855205508
2017-10-01	10.8913153347738
2018-01-01	10.8949343990529
2018-04-01	10.4677941457115
2018-07-01	10.9511649332619