Quarter	Percent
1999-04-01	71.1294957213679
2000-01-01	70.0156788962057
2000-04-01	71.2430601298579
2000-07-01	71.1717082967240
2000-10-01	70.5644148669011
2001-01-01	70.1751647047804
2001-04-01	71.0907727869057
2001-07-01	71.0352801474954
2001-10-01	70.7510622344414
2002-01-01	70.2654922151231
2002-04-01	71.1312385619901
2002-07-01	70.9666408068270
2002-10-01	70.0080665177464
2003-01-01	69.2674816023648
2003-04-01	69.7342898488254
2003-07-01	69.8671925553878
2003-10-01	69.3113864743234
2004-01-01	68.5592055003820
2004-04-01	69.4722043947312
2004-07-01	69.7204826638155
2004-10-01	69.2119805819314
2005-01-01	68.3728105998730
2005-04-01	68.9679155704739
2005-07-01	69.4900395997703
2005-10-01	69.2901001179638
2006-01-01	68.5650756003558
2006-04-01	69.3089490944544
2006-07-01	69.9075437253401
2006-10-01	69.8646227938801
2007-01-01	69.8430821476667
2007-04-01	70.7359029681031
2007-07-01	71.1887055542644
2007-10-01	71.5293437409656
2008-01-01	71.5691351631279
2008-04-01	72.2948188904172
2008-07-01	72.3131408334047
2008-10-01	71.4082705698451
2009-01-01	70.6928785904481
2009-04-01	71.0053328066364
2009-07-01	70.2103723703454
2009-10-01	69.6647450607265
2010-01-01	69.0670529570716
2010-04-01	69.6435511631780
2010-07-01	69.3254418231601
2010-10-01	69.0400176143557
2011-01-01	68.5909900041079
2011-04-01	69.0479438971812
2011-07-01	69.4053995269297
2011-10-01	69.0948928803289
2012-01-01	69.0457593794608
2012-04-01	69.6589446589446
2012-07-01	69.3585429685414
2012-10-01	68.6795362688790
2013-01-01	68.2899027118734
2013-04-01	68.8289717155696
2013-07-01	68.9719675413637
2013-10-01	68.4869647404762
2014-01-01	67.9250222524740
2014-04-01	68.7976401795970
2014-07-01	68.5610295073444