Quarter	Ratio
2008-01-01	51.8629102717664
2008-04-01	51.5284903060853
2008-07-01	51.1397085946910
2008-10-01	50.7313909956616
2009-01-01	50.8963834326401
2009-04-01	50.7465548324945
2009-07-01	49.4737703382304
2009-10-01	48.7082901752139
2010-01-01	48.6745583430669
2010-04-01	47.4084473849719
2010-07-01	48.2841840694427
2010-10-01	47.4987083547438
2011-01-01	47.0770460525022
2011-04-01	47.0336014434352
2011-07-01	46.9577986417196
2011-10-01	46.6361243640245
2012-01-01	46.7563616014748
2012-04-01	47.3845079423521
2012-07-01	47.6338095534415
2012-10-01	47.7542406888545
2013-01-01	47.1051032436210
2013-04-01	47.6460604363878
2013-07-01	46.9439706182183
2013-10-01	46.3347275769358
2014-01-01	46.1027298744922
2014-04-01	46.6991038956551
2014-07-01	46.2884196965660
2014-10-01	45.7695341287990
2015-01-01	45.7366878115502
2015-04-01	45.2995031233273
2015-07-01	45.4342868670051
2015-10-01	45.0586438663158
2016-01-01	44.6275640238103
2016-04-01	44.1857050797768
2016-07-01	43.8007969694399
2016-10-01	43.4603955129280
2017-01-01	43.5973480694032
2017-04-01	43.1101847168199
2017-07-01	42.9024598971772
2017-10-01	42.3329095447453
2018-01-01	43.0829332506749