Quarter	Percent
1999-04-01	46.4954012052014
2000-01-01	45.0723960765997
2000-04-01	45.7355911138729
2000-07-01	46.7578365089121
2000-10-01	45.9812509605041
2001-01-01	46.2621885157096
2001-04-01	46.3422194668320
2001-07-01	46.2063615205586
2001-10-01	47.2693325035009
2002-01-01	46.9311260346712
2002-04-01	46.3704630788486
2002-07-01	47.4228419238603
2002-10-01	45.6695379796398
2003-01-01	45.7386363636364
2003-04-01	47.9551555345018
2003-07-01	49.5909376966646
2003-10-01	49.3211240922008
2004-01-01	47.4880000000000
2004-04-01	47.9840637450199
2004-07-01	48.3006223073241
2004-10-01	48.5623003194888
2005-01-01	46.9456469456470
2005-04-01	48.2188703465982
2005-07-01	50.1449275362319
2005-10-01	49.9360409338024
2006-01-01	51.2984931067650
2006-04-01	52.8431843664905
2006-07-01	53.7019230769231
2006-10-01	53.4593209481102
2007-01-01	53.2291834433886
2007-04-01	53.8176546391753
2007-07-01	54.5103092783505
2007-10-01	54.2318233113010
2008-01-01	54.7054075867635
2008-04-01	54.2427670922903
2008-07-01	53.9469427369783
2008-10-01	53.4600389863548
2009-01-01	48.6266861693483
2009-04-01	46.6634272756722
2009-07-01	48.0943152454780
2009-10-01	45.3661697990927
2010-01-01	41.9380975530708
2010-04-01	42.7852621327707
2010-07-01	46.6990291262136
2010-10-01	48.4455958549223
2011-01-01	47.8035337980224
2011-04-01	48.1037277147488
2011-07-01	50.7293354943274
2011-10-01	49.6352731398930
2012-01-01	48.9174670356503
2012-04-01	49.5269168026101
2012-07-01	51.8970851652825
2012-10-01	51.2207031250000
2013-01-01	50.4906771344455
2013-04-01	52.1618534834394
2013-07-01	52.0364939719778
2013-10-01	50.7918367346939
2014-01-01	50.9156311314585
2014-04-01	52.7296502124877
2014-07-01	52.7046903088740