Quarter	Percent
2003-04-01	78.4877602699308
2004-04-01	78.6867794172425
2005-01-01	78.4023072438676
2005-04-01	78.9631449795213
2005-07-01	78.9900840248884
2005-10-01	79.0343226198038
2006-01-01	78.8615889852334
2006-04-01	79.5246490100967
2006-07-01	79.5400008332676
2006-10-01	79.8282615262230
2007-01-01	79.4064480846543
2007-04-01	80.0261144204818
2007-07-01	79.9110093642685
2007-10-01	80.1695770968618
2008-01-01	79.6100397928085
2008-04-01	79.9605771817971
2008-07-01	79.7204880906704
2008-10-01	79.4960197009214
2009-01-01	77.9290249664080
2009-04-01	77.8907265650294
2009-07-01	77.6114095030445
2009-10-01	77.6777709555802
2010-01-01	77.0347974237516
2010-04-01	77.7319394423531
2010-07-01	77.6283197218754
2010-10-01	77.7510643782303
2011-01-01	77.4228702982809
2011-04-01	77.9561852403488
2011-07-01	77.8027020240113
2011-10-01	77.9998946534153
2012-01-01	77.5469937290985
2012-04-01	78.1872042259631
2012-07-01	78.0868462297070
2012-10-01	78.3355910465968
2013-01-01	77.6454271868713
2013-04-01	78.2753069781790
2013-07-01	78.1767094083294
2013-10-01	78.3711208643352
2014-01-01	78.0907189939663
2014-04-01	78.6208841171074
2014-07-01	78.6111104912084
2014-10-01	78.9030746767136
2015-01-01	78.5458410116471
2015-04-01	78.9682443643391
2015-07-01	78.9476258895964
2015-10-01	79.1944045276654
2016-01-01	79.0566231025052
2016-04-01	79.4971986364445
2016-07-01	79.5948560347971
2016-10-01	79.8184455180274
2017-01-01	79.5695856168549
2017-04-01	80.1729810386341
2017-07-01	80.2120619040300
2017-10-01	80.6004091999325
2018-01-01	80.3788922209688