Quarter	Percent
1999-01-01	10.87983858121380
1999-04-01	10.21356113187400
1999-07-01	10.58451816745660
1999-10-01	9.94064488530025
2000-01-01	8.58591306223708
2000-04-01	8.28156259871538
2000-07-01	9.15628745635520
2000-10-01	8.68064773028936
2001-01-01	7.26879394267171
2001-04-01	6.91882423777984
2001-07-01	7.33120363852943
2001-10-01	8.53273379369413
2002-01-01	8.89943478724539
2002-04-01	7.79944289693593
2002-07-01	9.25492642853429
2002-10-01	8.55961910741380
2003-01-01	8.94181552282461
2003-04-01	7.99788695192816
2003-07-01	9.34380199667221
2003-10-01	9.13718503435989
2004-01-01	9.64371272745808
2004-04-01	8.28061224489796
2004-07-01	10.79311919622470
2004-10-01	9.43330165557945
2005-01-01	9.52404366211034
2005-04-01	8.97630843184382
2005-07-01	10.17852775739790
2005-10-01	9.34761441090555
2006-01-01	9.30152653021155
2006-04-01	8.97561453334639
2006-07-01	9.84990169280199
2006-10-01	9.10046338317489
2007-01-01	9.07135687998853
2007-04-01	8.73864878999667
2007-07-01	8.05088768631919
2007-10-01	7.92680101922632
2008-01-01	7.52058043811916
2008-04-01	6.69954008818928
2008-07-01	8.38978396191871
2008-10-01	7.74991859329209
2009-01-01	8.28864644970414
2009-04-01	7.41396171936851
2009-07-01	8.74781649351843
2009-10-01	7.96022180468356
2010-01-01	8.89674935076565
2010-04-01	8.16298278805777
2010-07-01	8.96133093525180
2010-10-01	8.04327583913448
2011-01-01	6.87269372693727
2011-04-01	6.70494619766706
2011-07-01	8.00305220162485
2011-10-01	7.12834635005192
2012-01-01	7.18882650965357
2012-04-01	7.15587136740457
2012-07-01	7.78243050605845
2012-10-01	7.49856137399850
2013-01-01	8.08974702780012
2013-04-01	7.97269563665566
2013-07-01	8.45289541918755
2013-10-01	8.15354070152217
2014-01-01	8.06887088921347
2014-04-01	7.26443235655378
2014-07-01	8.29156584860007
2014-10-01	8.13575484374323
2015-01-01	8.03346917540969
2015-04-01	7.20410147617785
2015-07-01	7.79186821806772
2015-10-01	8.03513757912414
2016-01-01	7.77860554800824
2016-04-01	7.99911855442926
2016-07-01	7.88218302770362
2016-10-01	6.60888869914187
2017-01-01	7.97793151764603
2017-04-01	7.06087715470216
2017-07-01	6.93261874918961
2017-10-01	6.25858516483516
2018-01-01	5.74283753645565
2018-04-01	5.86406425425339