Quarter	Percent
1975-01-01	6.4821
1975-04-01	6.8036
1975-07-01	7.6964
1975-10-01	9.2321
1976-01-01	9.6071
1976-04-01	9.3571
1976-07-01	9.5714
1976-10-01	8.4471
1977-01-01	7.4643
1977-04-01	7.2500
1977-07-01	6.5536
1977-10-01	5.8757
1978-01-01	6.8214
1978-04-01	7.0179
1978-07-01	8.5714
1978-10-01	6.6071
1979-01-01	12.6250
1979-04-01	10.3750
1979-07-01	8.4643
1979-10-01	13.2143
1980-01-01	11.3571
1980-04-01	14.9286
1980-07-01	8.9286
1980-10-01	18.9643
1981-01-01	18.7679
1981-04-01	19.2857
1981-07-01	19.7500
1981-10-01	12.8214
1982-01-01	15.5357
1982-04-01	14.9657
1982-07-01	14.0757
1982-10-01	10.3757
1983-01-01	8.8414
1983-04-01	9.6286
1983-07-01	9.4814
1983-10-01	9.0671
1984-01-01	9.6757
1984-04-01	10.4486
1984-07-01	12.6607
1984-10-01	10.1614
1985-01-01	10.5714
1985-04-01	9.6964
1985-07-01	8.5893
1985-10-01	9.8393
1986-01-01	12.3036
1986-04-01	8.3750
1986-07-01	8.0357
1986-10-01	8.1607
1987-01-01	7.1876
1987-04-01	8.5003
1987-07-01	9.0829
1987-10-01	8.5000
1988-01-01	8.4657
1988-04-01	8.7943
1988-07-01	9.9914
1988-10-01	10.3514
1989-01-01	11.5357
1989-04-01	12.0893
1989-07-01	11.9464
1989-10-01	12.0625
1990-01-01	12.9732
1990-04-01	13.0357
1990-07-01	12.8393
1990-10-01	11.6161
1991-01-01	9.5089
1991-04-01	8.7411
1991-07-01	8.9643
1991-10-01	7.4018
1992-01-01	6.8304
1992-04-01	6.0804
1992-07-01	6.2946
1992-10-01	6.7946
1993-01-01	4.7857
1993-04-01	4.2946
1993-07-01	4.3571
1993-10-01	3.7857
1994-01-01	4.3393
1994-04-01	5.6518
1994-07-01	4.9196
1994-10-01	5.5357
1995-01-01	8.0625
1995-04-01	7.3229
1995-07-01	6.1257
1995-10-01	5.7086
1996-01-01	4.9386
1996-04-01	4.7171
1996-07-01	4.0329
1996-10-01	3.0100
1997-01-01	2.9629
1997-04-01	2.9657
1997-07-01	3.2357
1997-10-01	4.3357
1998-01-01	4.6829
1998-04-01	4.7400
1998-07-01	5.7271
1998-10-01	5.1129
1999-01-01	4.9943
1999-04-01	4.5957
1999-07-01	4.5786
1999-10-01	4.7586
2000-01-01	5.2486
2000-04-01	5.7500
2000-07-01	5.7429
2000-10-01	5.8000
2001-01-01	4.9927
2001-04-01	4.4935
2001-07-01	3.4858
2001-10-01	2.2444
2002-01-01	1.9933
2002-04-01	2.4964
2002-07-01	2.7447
2002-10-01	2.7439
2003-01-01	2.9920
2003-04-01	3.2449
2003-07-01	2.7490
2003-10-01	2.7481
2004-01-01	2.2482
2004-04-01	2.0005
2004-07-01	2.2496
2004-10-01	2.4999
2005-01-01	2.4794
2005-04-01	2.4936
2005-07-01	2.7421
2005-10-01	3.2437
2006-01-01	3.7269
2006-04-01	4.2455
2006-07-01	4.2465
2006-10-01	4.2482
2007-01-01	4.2432
2007-04-01	4.2536
2007-07-01	4.4637
2007-10-01	4.2597
2008-01-01	3.4585
2008-04-01	2.9915
2008-07-01	2.9904
2008-10-01	1.5017
2009-01-01	0.4883
2009-04-01	0.2412
2009-07-01	0.2417
2009-10-01	0.2455
2010-01-01	0.2443
2010-04-01	0.4928
2010-07-01	0.9976
2010-10-01	0.9924
2011-01-01	0.9944
2011-04-01	0.9981
2011-07-01	0.9989
2011-10-01	0.9998
2012-01-01	0.9980
2012-04-01	0.9984
2012-07-01	0.9991
2012-10-01	0.9982
2013-01-01	1.0065
2013-04-01	1.0067
2013-07-01	0.9948
2013-10-01	1.0012
2014-01-01	0.9980
2014-04-01	0.9988
2014-07-01	0.9979
2014-10-01	1.0114
2015-01-01	0.7558
2015-04-01	0.7464
2015-07-01	0.5002
2015-10-01	0.5242
2016-01-01	0.4981
2016-04-01	0.5035
2016-07-01	0.4969
2016-10-01	0.4936
2017-01-01	0.5003
2017-04-01	0.4941
2017-07-01	0.9941
2017-10-01	0.9970
2018-01-01	1.2457
2018-04-01	1.2464
2018-07-01	1.4979