Quarter	Percent
1998-04-01	8.94006876975977
1999-04-01	7.60745703997448
2000-04-01	5.46529480510552
2001-01-01	5.26186487995533
2001-04-01	4.73127250373233
2001-07-01	4.69428521799548
2001-10-01	4.71581092455589
2002-01-01	5.36495458885706
2002-04-01	4.96612021857924
2002-07-01	4.97509205111544
2002-10-01	4.98430661774457
2003-01-01	5.78666252964252
2003-04-01	5.55362645948175
2003-07-01	5.52451625428738
2003-10-01	5.84504250539576
2004-01-01	6.91060492576111
2004-04-01	6.69264069264069
2004-07-01	6.34361989784969
2004-10-01	6.15567648549208
2005-01-01	6.84713727395173
2005-04-01	8.65638489585516
2005-07-01	7.25550725550726
2005-10-01	7.14422892260419
2006-01-01	7.86531266702298
2006-04-01	8.04471130871995
2006-07-01	6.34457950880675
2006-10-01	6.02043401165245
2007-01-01	6.79605526000378
2007-04-01	6.86742789200713
2007-07-01	5.48514609397286
2007-10-01	5.50523516702676
2008-01-01	6.25881377021983
2008-04-01	6.84771440659186
2008-07-01	5.65972993157459
2008-10-01	6.17093171797091
2009-01-01	7.86433404852286
2009-04-01	9.15898733160674
2009-07-01	8.06953709318779
2009-10-01	8.29459915264695
2010-01-01	9.39963863337714
2010-04-01	9.50032938733955
2010-07-01	7.95713088252904
2010-10-01	7.58591187794097
2011-01-01	8.34394775681850
2011-04-01	8.56034957877332
2011-07-01	7.08364583744523
2011-10-01	7.22753576595403
2012-01-01	8.16757082579867
2012-04-01	8.60782245145157
2012-07-01	7.49365110373120
2012-10-01	7.63264656749662
2013-01-01	8.61080813088746
2013-04-01	8.76537955583069
2013-07-01	7.38432958569576
2013-10-01	7.45109603853337
2014-01-01	8.59295299380052
2014-04-01	8.69241205357996
2014-07-01	7.23182535607660
2014-10-01	7.30669877833240
2015-01-01	8.26623829062476
2015-04-01	8.30947731624547
2015-07-01	6.55647487475330
2015-10-01	6.59613828188230
2016-01-01	7.66868810931143
2016-04-01	7.54370514718282
2016-07-01	6.34768199450156
2016-10-01	6.40430631110435
2017-01-01	7.17813383600377
2017-04-01	7.30346389702226
2017-07-01	6.29739108083794
2017-10-01	6.09582897294065
2018-01-01	6.66579848191695
2018-04-01	6.87027066356228