Quarter	Percent
1960-01-01	4.2500
1960-04-01	4.9600
1960-07-01	5.3400
1960-10-01	4.4600
1961-01-01	3.2100
1961-04-01	2.5800
1961-07-01	2.8200
1961-10-01	3.0000
1962-01-01	3.0100
1962-04-01	3.1700
1962-07-01	3.0500
1962-10-01	3.4200
1963-01-01	3.3600
1963-04-01	3.5900
1963-07-01	2.9900
1963-10-01	2.9300
1964-01-01	3.2600
1964-04-01	3.3300
1964-07-01	3.6300
1964-10-01	3.3300
1965-01-01	4.0900
1965-04-01	4.4100
1965-07-01	4.7700
1965-10-01	4.6700
1966-01-01	5.0700
1966-04-01	6.1100
1966-07-01	5.6100
1966-10-01	5.8500
1967-01-01	4.2600
1967-04-01	3.8000
1967-07-01	3.1200
1967-10-01	2.7700
1968-01-01	2.6900
1968-04-01	2.6800
1968-07-01	2.6600
1968-10-01	1.9400
1969-01-01	3.6300
1969-04-01	5.0200
1969-07-01	4.0300
1969-10-01	8.3500
1970-01-01	9.5300
1970-04-01	8.7200
1970-07-01	9.1400
1970-10-01	7.4700
1971-01-01	7.3600
1971-04-01	6.9400
1971-07-01	6.9900
1971-10-01	5.7700
1972-01-01	3.8800
1972-04-01	2.6500
1972-07-01	4.8300
1972-10-01	6.6900
1973-01-01	11.3700
1973-04-01	10.9000
1973-07-01	9.7600
1973-10-01	11.8900
1974-01-01	11.6300
1974-04-01	8.7900
1974-07-01	9.2200
1974-10-01	8.3500
1975-01-01	4.8500
1975-04-01	4.9800
1975-07-01	4.3300
1975-10-01	3.9200
1976-01-01	3.6400
1976-04-01	4.3100
1976-07-01	4.3300
1976-10-01	5.0300
1977-01-01	4.5300
1977-04-01	4.1300
1977-07-01	4.0100
1977-10-01	3.2400
1978-01-01	3.5500
1978-04-01	3.5500
1978-07-01	3.5100
1978-10-01	3.5600
1979-01-01	4.3200
1979-04-01	5.6000
1979-07-01	6.5000
1979-10-01	9.0200
1980-01-01	8.6100
1980-04-01	10.0400
1980-07-01	9.2700
1980-10-01	9.1600
1981-01-01	11.9700
1981-04-01	11.9300
1981-07-01	12.0000
1981-10-01	10.5800
1982-01-01	9.8300
1982-04-01	9.0200
1982-07-01	7.9700
1982-10-01	6.1500
1983-01-01	5.5100
1983-04-01	5.0500
1983-07-01	5.4200
1983-10-01	5.6100
1984-01-01	5.5300
1984-04-01	5.5200
1984-07-01	5.5500
1984-10-01	5.6200
1985-01-01	5.8500
1985-04-01	5.5200
1985-07-01	4.5900
1985-10-01	4.6400
1986-01-01	4.9000
1986-04-01	4.3900
1986-07-01	4.3900
1986-10-01	5.0000
1987-01-01	3.8400
1987-04-01	3.6100
1987-07-01	3.7100
1987-10-01	3.1900
1988-01-01	3.2400
1988-04-01	3.7400
1988-07-01	4.7000
1988-10-01	4.8900
1989-01-01	5.6100
1989-04-01	6.4700
1989-07-01	6.9100
1989-10-01	7.6700
1990-01-01	7.7200
1990-04-01	7.8300
1990-07-01	8.0300
1990-10-01	8.4300
1991-01-01	8.7600
1991-04-01	8.7900
1991-07-01	9.0700
1991-10-01	9.2300
1992-01-01	9.6200
1992-04-01	9.6500
1992-07-01	9.3200
1992-10-01	8.9100
1993-01-01	8.3400
1993-04-01	7.8200
1993-07-01	6.9900
1993-10-01	6.1900
1994-01-01	5.9900
1994-04-01	5.1400
1994-07-01	4.8100
1994-10-01	4.9000
1995-01-01	4.7900
1995-04-01	4.5500
1995-07-01	4.2000
1995-10-01	4.0800
1996-01-01	3.3800
1996-04-01	3.3400
1996-07-01	3.0900
1996-10-01	3.1100
1997-01-01	3.1500
1997-04-01	3.0700
1997-07-01	3.1000
1997-10-01	3.4400
1998-01-01	3.4500
1998-04-01	3.4700
1998-07-01	3.4800
1998-10-01	3.1400
1999-01-01	2.9252
1999-04-01	2.5632
1999-07-01	2.4336
1999-10-01	3.0418
2000-01-01	3.5104
2000-04-01	4.2945
2000-07-01	4.5905
2000-10-01	4.8268
2001-01-01	4.7814
2001-04-01	4.5395
2001-07-01	3.9865
2001-10-01	3.3389
2002-01-01	3.2640
2002-04-01	3.3485
2002-07-01	3.3186
2002-10-01	3.0945
2003-01-01	2.7490
2003-04-01	2.2133
2003-07-01	2.0209
2003-10-01	2.0567
2004-01-01	2.0057
2004-04-01	2.0277
2004-07-01	2.0518
2004-10-01	2.0535
2005-01-01	2.0567
2005-04-01	2.0623
2005-07-01	2.0941
2005-10-01	2.2757
2006-01-01	2.5200
2006-04-01	2.6977
2006-07-01	3.0410
2006-10-01	3.5011
2007-01-01	3.6909
2007-04-01	3.9557
2007-07-01	4.0286
2007-10-01	3.8791
2008-01-01	4.0910
2008-04-01	4.0067
2008-07-01	4.2733
2008-10-01	2.4864
2009-01-01	1.0620
2009-04-01	0.6980
2009-07-01	0.3632
2009-10-01	0.3546
2010-01-01	0.3477
2010-04-01	0.3543
2010-07-01	0.4536
2010-10-01	0.4981
2011-01-01	0.6587
2011-04-01	1.1240
2011-07-01	1.0055
2011-10-01	0.6270
2012-01-01	0.3567
2012-04-01	0.3320
2012-07-01	0.0993
2012-10-01	0.0734
2013-01-01	0.0670
2013-04-01	0.0862
2013-07-01	0.0803
2013-10-01	0.1686
2014-01-01	0.1919
2014-04-01	0.0758
2014-07-01	0.0066
2014-10-01	-0.0301
2015-01-01	-0.0504
2015-04-01	-0.1185
2015-07-01	-0.1357
2015-10-01	-0.1990
2016-01-01	-0.2877
2016-04-01	-0.3325
2016-07-01	-0.3430
2016-10-01	-0.3504
2017-01-01	-0.3535
2017-04-01	-0.3587
2017-07-01	-0.3581
2017-10-01	-0.3423
2018-01-01	-0.3639
2018-04-01	-0.3618
2018-07-01	-0.3627