Quarter	Percent
1978-01-01	5.9800
1978-04-01	9.1800
1978-07-01	8.2300
1978-10-01	11.0000
1979-01-01	12.4600
1979-04-01	11.7300
1979-07-01	13.2900
1979-10-01	15.5800
1980-01-01	17.1900
1980-04-01	18.3200
1980-07-01	16.3200
1980-10-01	13.8300
1981-01-01	14.2800
1981-04-01	10.3200
1981-07-01	13.1200
1981-10-01	13.5500
1982-01-01	13.8100
1982-04-01	12.8400
1982-07-01	11.0000
1982-10-01	10.7100
1983-01-01	11.0500
1983-04-01	9.8300
1983-07-01	9.8100
1983-10-01	8.9900
1984-01-01	9.0600
1984-04-01	8.5600
1984-07-01	10.5600
1984-10-01	9.1900
1985-01-01	14.6000
1985-04-01	12.7200
1985-07-01	11.5700
1985-10-01	11.5000
1986-01-01	12.7500
1986-04-01	10.2700
1986-07-01	9.3800
1986-10-01	10.8300
1987-01-01	10.7900
1987-04-01	9.0000
1987-07-01	9.6200
1987-10-01	8.5100
1988-01-01	8.5000
1988-04-01	6.8800
1988-07-01	10.6000
1988-10-01	12.5700
1989-01-01	12.5800
1989-04-01	13.0100
1989-07-01	13.8300
1989-10-01	14.9800
1990-01-01	14.8200
1990-04-01	14.7600
1990-07-01	14.8700
1990-10-01	14.3500
1991-01-01	13.4500
1991-04-01	11.6300
1991-07-01	10.6600
1991-10-01	10.7200
1992-01-01	10.4100
1992-04-01	9.9300
1992-07-01	9.9400
1992-10-01	6.8200
1993-01-01	6.0000
1993-04-01	5.7900
1993-07-01	6.1000
1993-10-01	5.8800
1994-01-01	5.2400
1994-04-01	4.7700
1994-07-01	4.8300
1994-10-01	5.4400
1995-01-01	5.8300
1995-04-01	6.3000
1995-07-01	6.7000
1995-10-01	6.6900
1996-01-01	6.0800
1996-04-01	5.7800
1996-07-01	5.7300
1996-10-01	5.8300
1997-01-01	5.9651
1997-04-01	6.2227
1997-07-01	6.9772
1997-10-01	7.1379
1998-01-01	7.4033
1998-04-01	7.1409
1998-07-01	7.2790
1998-10-01	6.3750
1999-01-01	5.5665
1999-04-01	4.8972
1999-07-01	4.9190
1999-10-01	4.7814
2000-01-01	5.7620
2000-04-01	5.9032
2000-07-01	6.1259
2000-10-01	5.7383
2001-01-01	5.4017
2001-04-01	4.7796
2001-07-01	4.8526
2001-10-01	4.5841
2002-01-01	4.0431
2002-04-01	3.5006
2002-07-01	3.8711
2002-10-01	4.3953
2003-01-01	3.9196
2003-04-01	3.6535
2003-07-01	3.5179
2003-10-01	3.7778
2004-01-01	3.9040
2004-04-01	4.3628
2004-07-01	4.7314
2004-10-01	4.7618
2005-01-01	4.7618
2005-04-01	4.7935
2005-07-01	4.5499
2005-10-01	4.6381
2006-01-01	4.5402
2006-04-01	4.5712
2006-07-01	4.7892
2006-10-01	5.0844
2007-01-01	5.3032
2007-04-01	5.6093
2007-07-01	5.8246
2007-10-01	5.5964
2008-01-01	5.3078
2008-04-01	5.0326
2008-07-01	4.8925
2008-10-01	1.6525
2009-01-01	0.5224
2009-04-01	0.4158
2009-07-01	0.4302
2009-10-01	0.4492
2010-01-01	0.4713
2010-04-01	0.4870
2010-07-01	0.5010
2010-10-01	0.5173
2011-01-01	0.5154
2011-04-01	0.5311
2011-07-01	0.5486
2011-10-01	0.5201
2012-01-01	0.4900
2012-04-01	0.4859
2012-07-01	0.4271
2012-10-01	0.4309
2013-01-01	0.4353
2013-04-01	0.4252
2013-07-01	0.4299
2013-10-01	0.4215
2014-01-01	0.4159
2014-04-01	0.4251
2014-07-01	0.4319
2014-10-01	0.4280
2015-01-01	0.4568
2015-04-01	0.4566
2015-07-01	0.4544
2015-10-01	0.4575
2016-01-01	0.4646
2016-04-01	0.4598
2016-07-01	0.2130
2016-10-01	0.2125
2017-01-01	0.2095
2017-04-01	0.2121
2017-07-01	0.2123
2017-10-01	0.4619
2018-01-01	0.4637
2018-04-01	0.4507
2018-07-01	0.7012