Quarter	Percent
1999-01-01	56.9198482862482
2000-01-01	54.0203772545780
2000-04-01	54.8068530901444
2000-07-01	55.5505430584890
2000-10-01	55.1740177301083
2001-01-01	53.3732999897228
2001-04-01	53.1743049054644
2001-07-01	53.5256192738378
2001-10-01	52.5090202420347
2002-01-01	50.6467256757215
2002-04-01	50.8648527888541
2002-07-01	51.3468887106666
2002-10-01	50.7096887353778
2003-01-01	49.3504550215608
2003-04-01	50.2115073536877
2003-07-01	51.0976039942474
2003-10-01	50.9060754780843
2004-01-01	49.6840170056302
2004-04-01	50.5794685224059
2004-07-01	51.5037619307428
2004-10-01	52.2384446222856
2005-01-01	51.3012875190576
2005-04-01	51.7312675375589
2005-07-01	53.3362899649236
2005-10-01	53.2495264105602
2006-01-01	43.0526438065947
2006-04-01	44.2277393568503
2006-07-01	45.7857531266993
2006-10-01	45.9898003917804
2007-01-01	45.6611650539336
2007-04-01	46.7146473253949
2007-07-01	47.3562730183924
2007-10-01	47.7954982341634
2008-01-01	47.8932450790208
2008-04-01	48.6543094105690
2008-07-01	49.5572736817873
2008-10-01	49.4584249988776
2009-01-01	48.4733338571894
2009-04-01	48.8058297019055
2009-07-01	49.4731124997200
2009-10-01	48.6858818328829
2010-01-01	47.3313448349885
2010-04-01	48.3012409554849
2010-07-01	49.0892048470338
2010-10-01	48.7621778445074
2011-01-01	47.8775528636102
2011-04-01	48.8783463232802
2011-07-01	49.5040169825488
2011-10-01	49.0273756920108
2012-01-01	48.0286738351254
2012-04-01	48.9087234378881
2012-07-01	49.3965088971186
2012-10-01	48.9987809283005
2013-01-01	47.9377805380685
2013-04-01	48.8108285220378
2013-07-01	49.4326593808980
2013-10-01	49.0787146642860
2014-01-01	48.3947365446139
2014-04-01	49.5771520496655
2014-07-01	50.6126541548885