Quarter	Percent
2003-04-01	75.6549801723480
2004-04-01	75.7886701074890
2005-01-01	75.0372502252824
2005-04-01	76.1753880478691
2005-07-01	76.7675259399616
2005-10-01	76.1600570539286
2006-01-01	75.5407121414466
2006-04-01	76.6660769805335
2006-07-01	77.1781383401375
2006-10-01	76.6848105565276
2007-01-01	75.9957925677977
2007-04-01	77.0248477079166
2007-07-01	77.3661167995488
2007-10-01	76.7879907476437
2008-01-01	75.9454254288778
2008-04-01	76.7701146450734
2008-07-01	76.8820081601578
2008-10-01	75.6801084085861
2009-01-01	73.6157886914445
2009-04-01	73.8582252005815
2009-07-01	73.8392147317979
2009-10-01	72.9715952420483
2010-01-01	72.1227933521955
2010-04-01	73.3937384364394
2010-07-01	73.8258535060018
2010-10-01	73.2214612427807
2011-01-01	72.6118193521190
2011-04-01	73.6620160767172
2011-07-01	73.9669028578116
2011-10-01	73.6580838532085
2012-01-01	72.8638235613409
2012-04-01	73.9438204018838
2012-07-01	74.4017806282536
2012-10-01	74.0354512203771
2013-01-01	73.0310923217254
2013-04-01	74.0619628705745
2013-07-01	74.4506068101175
2013-10-01	74.0376388452665
2014-01-01	73.4023816663241
2014-04-01	74.5259940554544
2014-07-01	75.1632823429780
2014-10-01	74.7228820574646
2015-01-01	74.1106271473003
2015-04-01	74.9742770743777
2015-07-01	75.5090765322714
2015-10-01	75.1332545459940
2016-01-01	74.7094850024551
2016-04-01	75.6807188847134
2016-07-01	76.0683274370740
2016-10-01	75.6719999721195
2017-01-01	75.1851406259246
2017-04-01	76.2625410063244
2017-07-01	76.6324712554756
2017-10-01	76.3152342101561
2018-01-01	76.0296848339728