Quarter	Percent
2005-01-01	40.8545793464739
2005-04-01	41.7129619037570
2005-07-01	41.8702226674142
2005-10-01	42.1589590752853
2006-01-01	41.9601614051435
2006-04-01	42.8241122932291
2006-07-01	43.2139907433018
2006-10-01	43.4799910575065
2007-01-01	43.0361697597302
2007-04-01	43.8818174428037
2007-07-01	43.8236259796446
2007-10-01	44.1075111980274
2008-01-01	43.8228478040854
2008-04-01	44.6650856347421
2008-07-01	44.2621002630578
2008-10-01	44.5294353637435
2009-01-01	44.2296441799535
2009-04-01	45.0208437031251
2009-07-01	44.7246780331381
2009-10-01	44.8464843972978
2010-01-01	44.8537824035747
2010-04-01	45.5600942414154
2010-07-01	45.6079806555874
2010-10-01	45.4908470988181
2011-01-01	45.5332658066648
2011-04-01	46.3162223017398
2011-07-01	46.2628367767473
2011-10-01	46.4390515668545
2012-01-01	46.5060900115840
2012-04-01	47.2334323933778
2012-07-01	47.0874571447232
2012-10-01	47.4853678356975
2013-01-01	47.4681704751089
2013-04-01	48.2206955785343
2013-07-01	48.2204897164756
2013-10-01	48.5214601475660
2014-01-01	48.4190863270264
2014-04-01	49.1781029681667
2014-07-01	49.1188729384842
2014-10-01	49.6047964526578
2015-01-01	49.3291567353407
2015-04-01	49.9592719703792
2015-07-01	50.1348440766079
2015-10-01	50.6866313318186
2016-01-01	50.5907120775896
2016-04-01	51.1957348924408
2016-07-01	51.1049649813168
2016-10-01	51.5829346933931
2017-01-01	51.6917653658315
2017-04-01	52.2862869384652
2017-07-01	52.3355178234483
2017-10-01	52.7916978525448
2018-01-01	52.7347357113368
2018-04-01	53.2110279349533