Quarter	Percent
1999-01-01	55.6424110050964
1999-04-01	55.6805184902783
1999-07-01	56.1133105277319
1999-10-01	55.5427384934825
2000-01-01	54.5496200694948
2000-04-01	55.3812087198870
2000-07-01	56.0152671755725
2000-10-01	55.9765208110992
2001-01-01	55.0992522867879
2001-04-01	55.4005246549823
2001-07-01	56.0287190396596
2001-10-01	55.9998479607739
2002-01-01	54.4724683783988
2002-04-01	55.1934287228405
2002-07-01	55.8377171403701
2002-10-01	55.0381129356441
2003-01-01	54.9877335346292
2003-04-01	54.8356665786197
2003-07-01	55.3998942678046
2003-10-01	54.6951541186224
2004-01-01	54.4452387222996
2004-04-01	55.1160694162723
2004-07-01	55.5037944248253
2004-10-01	54.9760011999400
2005-01-01	54.4780867547438
2005-04-01	55.2688817220430
2005-07-01	55.1752546434991
2005-10-01	55.1771830143541
2006-01-01	54.9813432835821
2006-04-01	55.5062465038225
2006-07-01	56.4292908568657
2006-10-01	56.2302104674986
2007-01-01	55.4264716799050
2007-04-01	55.5551437889119
2007-07-01	55.3341973708573
2007-10-01	55.4150611649396
2008-01-01	54.9774924359826
2008-04-01	56.2145435791645
2008-07-01	56.5910597245747
2008-10-01	55.6081452944414
2009-01-01	53.8554525806806
2009-04-01	53.3860458305879
2009-07-01	53.5425582501189
2009-10-01	51.9928461931528
2010-01-01	51.1673719538888
2010-04-01	51.3429789715369
2010-07-01	51.7472335468841
2010-10-01	51.7704739422553
2011-01-01	51.0874695907919
2011-04-01	51.5325184083572
2011-07-01	52.0207329007938
2011-10-01	51.4274342367117
2012-01-01	50.7486979166667
2012-04-01	51.0241682020158
2012-07-01	51.0145136832984
2012-10-01	51.2502702313180
2013-01-01	50.5058141627966
2013-04-01	50.8634957185004
2013-07-01	50.7263574253865
2013-10-01	50.6671927684913
2014-01-01	50.2311248073960
2014-04-01	51.1394941147007
2014-07-01	51.8207483114748
2014-10-01	51.6192240550073