Quarter	Percent
2005-01-01	50.4665668537542
2005-04-01	49.8425501801844
2005-07-01	49.6301772813469
2005-10-01	49.7183242619789
2006-01-01	50.1377582534148
2006-04-01	49.5595533864583
2006-07-01	49.2887635419733
2006-10-01	49.3939121026606
2007-01-01	49.9126843874502
2007-04-01	49.3943109051602
2007-07-01	49.2514608589884
2007-10-01	49.2303439205717
2008-01-01	49.6783847181206
2008-04-01	49.0278386040047
2008-07-01	48.9858351226669
2008-10-01	49.1249122909042
2009-01-01	49.4828549591431
2009-04-01	48.9574451621302
2009-07-01	48.7820902084409
2009-10-01	49.0541670589317
2010-01-01	49.3996388462400
2010-04-01	48.8881768976080
2010-07-01	48.8591222454044
2010-10-01	49.1725359050353
2011-01-01	49.4656604812789
2011-04-01	48.9072787768495
2011-07-01	48.8499811268171
2011-10-01	48.9092580386612
2012-01-01	49.2599624253962
2012-04-01	48.6104547758002
2012-07-01	48.5990215467269
2012-10-01	48.7240914551242
2013-01-01	49.0639323120663
2013-04-01	48.4953367645071
2013-07-01	48.5403416765168
2013-10-01	48.6276018598503
2014-01-01	48.9604503261329
2014-04-01	48.5865631520400
2014-07-01	48.6151236635607
2014-10-01	48.6200026399563
2015-01-01	48.9892390190368
2015-04-01	48.5148087115580
2015-07-01	48.5274670935765
2015-10-01	48.4216865186617
2016-01-01	48.6201395746016
2016-04-01	48.2418420156706
2016-07-01	48.0885140923392
2016-10-01	48.2257603914803
2017-01-01	48.4106908995602
2017-04-01	47.9873482270053
2017-07-01	47.8510317693018
2017-10-01	47.9334579688491
2018-01-01	48.1292287948108
2018-04-01	47.6560951864889