Quarter	Percent, Seasonally Adjusted
1981-01-01	71.90000000
1981-04-01	71.70000000
1981-07-01	70.40000000
1981-10-01	72.60000000
1982-01-01	69.10000000
1982-04-01	70.20000000
1982-07-01	71.20000000
1982-10-01	70.50000000
1983-01-01	66.40000000
1983-04-01	64.30000000
1983-07-01	66.90000000
1983-10-01	72.70000000
1984-01-01	69.70000000
1984-04-01	69.20000000
1984-07-01	70.70000000
1984-10-01	71.60000000
1985-01-01	69.30000000
1985-04-01	70.60000000
1985-07-01	71.50000000
1985-10-01	73.70000000
1986-01-01	70.90000000
1986-04-01	73.00000000
1986-07-01	74.00000000
1986-10-01	75.70000000
1987-01-01	74.30000000
1987-04-01	73.90000000
1987-07-01	74.30000000
1987-10-01	77.20000000
1988-01-01	73.67000000
1988-04-01	75.50000000
1988-07-01	74.40000000
1988-10-01	74.80000000
1989-01-01	71.60000000
1989-04-01	72.90000000
1989-07-01	73.00000000
1989-10-01	74.40000000
1990-01-01	71.80000000
1990-04-01	73.30000000
1990-07-01	73.70000000
1990-10-01	75.00000000
1991-01-01	70.40000000
1991-04-01	73.40000000
1991-07-01	72.10000000
1991-10-01	75.00000000
1992-01-01	72.60000000
1992-04-01	74.30000000
1992-07-01	75.20000000
1992-10-01	77.10000000
1993-01-01	74.01000000
1993-04-01	73.20000000
1993-07-01	73.13000000
1993-10-01	77.20000000
1994-01-01	72.48000000
1994-04-01	73.90000000
1994-07-01	74.74000000
1994-10-01	77.27000000
1995-01-01	75.14000000
1995-04-01	72.62000000
1995-07-01	73.60000000
1995-10-01	75.55000000
1996-01-01	71.26000000
1996-04-01	69.69000000
1996-07-01	68.60000000
1996-10-01	72.63000000
1997-01-01	70.61403509
1997-04-01	70.00000000
1997-07-01	72.50000000
1997-10-01	75.00000000
1998-01-01	69.50127877
1998-04-01	68.29000000
1998-07-01	65.97323601
1998-10-01	66.31720430
1999-01-01	61.96700508
1999-04-01	60.84323040
1999-07-01	63.58669834
1999-10-01	66.31720430
2000-01-01	66.72025723
2000-04-01	67.47899160
2000-07-01	69.78647687
2000-10-01	71.47350993
2001-01-01	68.40909091
2001-04-01	67.55892256
2001-07-01	66.33928571
2001-10-01	68.59677419
2002-01-01	65.88785047
2002-04-01	66.92832765
2002-07-01	66.91222571
2002-10-01	68.94736842
2003-01-01	66.15384615
2003-04-01	68.27922078
2003-07-01	69.10714286
2003-10-01	71.60000000
2004-01-01	70.12944984
2004-04-01	70.36971831
2004-07-01	70.94827586
2004-10-01	73.01056338
2005-01-01	69.88721805
2005-04-01	69.87500000
2005-07-01	72.40625000
2005-10-01	75.40909091
2006-01-01	70.90909091
2006-04-01	73.64261168
2006-07-01	76.36963696
2006-10-01	76.44670051
2007-01-01	74.45488722
2007-04-01	73.33333333
2007-07-01	74.12500000
2007-10-01	75.62030075
2008-01-01	71.54296875
2008-04-01	67.65517241
2008-07-01	68.56666667
2008-10-01	69.51219512
2009-01-01	65.23437500
2009-04-01	65.38812785
2009-07-01	66.34099617
2009-10-01	68.07142857
2010-01-01	66.03125000
2010-04-01	66.86770428
2010-07-01	68.84228188
2010-10-01	71.05960265
2011-01-01	69.18918919
2011-04-01	70.46232877
2011-07-01	71.63333333
2011-10-01	73.35504886
2012-01-01	70.10309278
2012-04-01	69.64882943
2012-07-01	70.94771242
2012-10-01	71.34551495
2013-01-01	68.00675676
2013-04-01	67.88235294
2013-07-01	69.48504983
2013-10-01	70.95081967
2014-01-01	69.45762712
2014-04-01	71.02649007
2014-07-01	71.65573770
2014-10-01	71.65573770
2015-01-01	68.59531773
2015-04-01	70.28716216
2015-07-01	72.41666667
2015-10-01	74.06666667
2016-01-01	72.43377483
2016-04-01	72.46688742
2016-07-01	72.77408638
2016-10-01	72.70000000
2017-01-01	71.17940199
2017-04-01	68.26433121
2017-07-01	71.25827815
2017-10-01	66.89338235
2018-01-01	70.11627907
2018-04-01	69.70000000
2018-07-01	72.32441472