Quarter	Percent
2005-01-01	42.6726611375531
2005-04-01	43.4361149508082
2005-07-01	43.7308899755732
2005-10-01	43.9143174849054
2006-01-01	43.7923227028606
2006-04-01	44.6197945711450
2006-07-01	44.9707471103298
2006-10-01	45.1551691795593
2007-01-01	44.8113484196880
2007-04-01	45.4787006463236
2007-07-01	45.4543453706481
2007-10-01	45.7933563408250
2008-01-01	45.4840450600071
2008-04-01	46.2406730219784
2008-07-01	46.0446907807774
2008-10-01	46.4308063885736
2009-01-01	46.4635140670754
2009-04-01	47.3613229125656
2009-07-01	47.1836137911729
2009-10-01	47.2675744789842
2010-01-01	47.3309498256801
2010-04-01	48.0218939592053
2010-07-01	48.1673028660753
2010-10-01	47.9426648178391
2011-01-01	48.0111704304477
2011-04-01	48.7741716603158
2011-07-01	48.8256881802185
2011-10-01	48.8938947098089
2012-01-01	49.0522042037664
2012-04-01	49.7868823836712
2012-07-01	49.6402587068041
2012-10-01	50.0166115538719
2013-01-01	50.1661551363484
2013-04-01	50.7186466214567
2013-07-01	50.7463420483006
2013-10-01	50.9849777627609
2014-01-01	50.9909929583154
2014-04-01	51.6103044813247
2014-07-01	51.5287932246769
2014-10-01	51.8641037348175
2015-01-01	51.7636697283447
2015-04-01	52.1927295475767
2015-07-01	52.4712718215825
2015-10-01	52.8532036768361
2016-01-01	52.9502853974879
2016-04-01	53.3508569569006
2016-07-01	53.3395050274790
2016-10-01	53.7163888939561
2017-01-01	53.9080282600431
2017-04-01	54.3590785218869
2017-07-01	54.5548897348618
2017-10-01	54.7569250283831
2018-01-01	54.8085753287108
2018-04-01	55.2151291458128