Quarter	Percent
2007-01-01	37.7838329090812
2007-04-01	37.8813909661359
2007-07-01	37.9997033921230
2007-10-01	38.2270065850060
2008-01-01	38.2152175374561
2008-04-01	37.9379632830414
2008-07-01	37.5278844685612
2008-10-01	35.5706892478544
2009-01-01	39.1405970708566
2009-04-01	39.8949234184553
2009-07-01	39.7634880076198
2009-10-01	40.6233682405252
2010-01-01	40.6511575033346
2010-04-01	39.7202070183359
2010-07-01	41.7547376172101
2010-10-01	40.9672956042126
2011-01-01	41.3091526292302
2011-04-01	41.1117322659429
2011-07-01	42.3133910688897
2011-10-01	45.4738987715082
2012-01-01	44.4009122831801
2012-04-01	44.7482967557773
2012-07-01	44.2306800079541
2012-10-01	43.8634328009869
2013-01-01	43.8459819896235
2013-04-01	44.0649104397573
2013-07-01	44.1450135671637
2013-10-01	44.6943858750853
2014-01-01	44.0117321875223
2014-04-01	44.2452660171290
2014-07-01	44.7495304315394
2014-10-01	44.4872278647079
2015-01-01	44.6466701786242
2015-04-01	45.1656130129065
2015-07-01	44.5145348022276
2015-10-01	45.8140030747009
2016-01-01	44.4768281309232
2016-04-01	43.5012461514110
2016-07-01	43.7667924193195
2016-10-01	43.4323379637276
2017-01-01	44.0983177867009
2017-04-01	44.0366353664392
2017-07-01	42.5629672109201
2017-10-01	42.4468526309639
2018-01-01	41.7285904934111
2018-04-01	43.1260979875571