Quarter	Percent
2005-01-01	88.5419901476544
2005-04-01	87.8181669795152
2005-07-01	87.8108047200839
2005-10-01	88.9570772792069
2006-01-01	89.0590625837902
2006-04-01	87.7227847503268
2006-07-01	88.3941477812252
2006-10-01	89.4282825399814
2007-01-01	89.8305187594434
2007-04-01	89.0626329415483
2007-07-01	88.2067381409810
2007-10-01	89.0151044586180
2008-01-01	89.4166358097418
2008-04-01	88.3591923485654
2008-07-01	88.6267064186515
2008-10-01	88.4916160255512
2009-01-01	87.3056663130556
2009-04-01	85.2840571989006
2009-07-01	85.7817418677859
2009-10-01	86.8300092658697
2010-01-01	86.0038510365606
2010-04-01	86.7275701718641
2010-07-01	86.9767899643886
2010-10-01	87.8139124749185
2011-01-01	87.9988935192702
2011-04-01	88.3923043883944
2011-07-01	87.8005478936663
2011-10-01	88.9531248610992
2012-01-01	88.6450037957160
2012-04-01	87.6609333866226
2012-07-01	88.5694434892580
2012-10-01	88.8786448558607
2013-01-01	88.2953850527637
2013-04-01	87.9466106263364
2013-07-01	87.9142512734834
2013-10-01	88.4212438965509
2014-01-01	87.1478933654295
2014-04-01	86.7312738446926
2014-07-01	85.9604690877691
2014-10-01	87.4802027827156
2015-01-01	87.1142536409248
2015-04-01	86.8781546588371
2015-07-01	86.6317626361857
2015-10-01	87.0411078089536
2016-01-01	86.8906191041678
2016-04-01	85.8280271234733
2016-07-01	85.7248093810242
2016-10-01	86.2633604176032
2017-01-01	85.8297206499298
2017-04-01	85.7019532683578
2017-07-01	85.4982330293868
2017-10-01	86.4220830277446
2018-01-01	85.3797701852055
2018-04-01	85.5850625825109
2018-07-01	85.3869996620804