Quarter	Percent
2005-01-01	31.1459077541124
2005-04-01	30.6705698524790
2005-07-01	30.7632920473991
2005-10-01	30.4217003918203
2006-01-01	30.5725834014217
2006-04-01	30.1437115298473
2006-07-01	30.1966510096297
2006-10-01	29.9567820844277
2007-01-01	30.3193159448726
2007-04-01	29.9012000055847
2007-07-01	30.0146084818108
2007-10-01	29.5790183484257
2008-01-01	29.8277556692300
2008-04-01	29.3226734599143
2008-07-01	29.5120694624189
2008-10-01	29.1435273200804
2009-01-01	29.4139327092786
2009-04-01	29.0774488664922
2009-07-01	29.0081370886280
2009-10-01	28.8308770683583
2010-01-01	29.0663056698706
2010-04-01	28.6724769657900
2010-07-01	28.9791096989648
2010-10-01	28.7841502876969
2011-01-01	29.0062805934965
2011-04-01	28.5612804833611
2011-07-01	28.8013397070366
2011-10-01	28.4574577768553
2012-01-01	28.7033066057669
2012-04-01	28.1858317070853
2012-07-01	28.3405770275827
2012-10-01	28.0855847356114
2013-01-01	28.3958404820701
2013-04-01	27.9535756507642
2013-07-01	28.2000181656925
2013-10-01	27.9678009324895
2014-01-01	28.0981839059604
2014-04-01	27.9488284968853
2014-07-01	28.1859691571733
2014-10-01	27.7825449327157
2015-01-01	28.0839465753345
2015-04-01	27.7285949890678
2015-07-01	28.0746324173550
2015-10-01	27.4909085680753
2016-01-01	27.6147630518581
2016-04-01	27.4098951674656
2016-07-01	27.3820836381719
2016-10-01	27.0892002147142
2017-01-01	27.2306935203304
2017-04-01	26.9459870268771
2017-07-01	27.0354433814137
2017-10-01	26.6663646775846
2018-01-01	26.7835955823036
2018-04-01	26.4729049331836