Quarter	Percent
2005-01-01	48.1285307400588
2005-04-01	47.8589317498070
2005-07-01	48.4161930927201
2005-10-01	47.8611859458749
2006-01-01	47.0041183824515
2006-04-01	46.6288437397165
2006-07-01	47.6195513555128
2006-10-01	46.0779408821764
2007-01-01	45.8077854778743
2007-04-01	46.1795071731343
2007-07-01	45.8062394866089
2007-10-01	43.9458799914560
2008-01-01	43.2237815514133
2008-04-01	42.7579985741514
2008-07-01	43.3412978788900
2008-10-01	41.2812474315169
2009-01-01	41.8898364216544
2009-04-01	41.8154887239882
2009-07-01	42.1710459276512
2009-10-01	40.6819267688833
2010-01-01	38.2965187370682
2010-04-01	37.5445458496306
2010-07-01	36.2246474541322
2010-10-01	35.2750377161425
2011-01-01	35.3433374324230
2011-04-01	34.2462885202267
2011-07-01	34.6192205802925
2011-10-01	33.8451231889683
2012-01-01	34.2264021103338
2012-04-01	34.3036582563183
2012-07-01	34.1353867021087
2012-10-01	34.2136123160549
2013-01-01	33.7204523976964
2013-04-01	33.4245927645287
2013-07-01	33.8531891555949
2013-10-01	33.1671193649565
2014-01-01	33.3102228657587
2014-04-01	32.6853359195155
2014-07-01	32.5562661832447
2014-10-01	32.2899056776832
2015-01-01	33.3147440617261
2015-04-01	32.5658254400487
2015-07-01	32.1058607693093
2015-10-01	31.8281605442235
2016-01-01	32.9013495992809
2016-04-01	31.6594718610078
2016-07-01	31.4966692180427
2016-10-01	31.3280386474293
2017-01-01	32.2651815757296
2017-04-01	31.1978734699246
2017-07-01	31.3208742268725
2017-10-01	30.2276574831421
2018-01-01	30.3996813552381
2018-04-01	29.8069019401290
2018-07-01	30.8859549700199