Quarter	Percent
2003-04-01	68.2903941920471
2004-04-01	68.4191610415280
2005-01-01	67.9936720396050
2005-04-01	68.8145689777004
2005-07-01	69.1485134079238
2005-10-01	68.8600831708776
2006-01-01	68.4819373677861
2006-04-01	69.3867158318386
2006-07-01	69.6953895000498
2006-10-01	69.5877482425830
2007-01-01	69.0117459068097
2007-04-01	69.7759359277040
2007-07-01	69.9738978129089
2007-10-01	69.8052944620270
2008-01-01	69.1747870724735
2008-04-01	69.8190578217170
2008-07-01	69.7304810566912
2008-10-01	69.1645500113556
2009-01-01	67.6525990480985
2009-04-01	67.8820242131206
2009-07-01	67.6680773309090
2009-10-01	67.2205424436930
2010-01-01	66.6149986392504
2010-04-01	67.4320644038272
2010-07-01	67.5791717225893
2010-10-01	67.2974103145135
2011-01-01	66.8965320663353
2011-04-01	67.6402081342134
2011-07-01	67.6947191679916
2011-10-01	67.6328768421280
2012-01-01	67.0086201068288
2012-04-01	67.8459957310643
2012-07-01	68.0228394589881
2012-10-01	68.0352997407817
2013-01-01	67.3689132466089
2013-04-01	68.1465356324256
2013-07-01	68.3687477940019
2013-10-01	68.2807902960897
2014-01-01	67.8894167199878
2014-04-01	68.7166667165566
2014-07-01	68.9739581959433
2014-10-01	69.0049635867224
2015-01-01	68.5081120020241
2015-04-01	69.2003235938105
2015-07-01	69.4292880682668
2015-10-01	69.4567736690550
2016-01-01	69.2172076642892
2016-04-01	69.8783355360327
2016-07-01	70.1730771763398
2016-10-01	70.1341891467239
2017-01-01	69.8338888962890
2017-04-01	70.6580616627935
2017-07-01	70.9364624885060
2017-10-01	70.9230942153623
2018-01-01	70.7075535276586