Quarter	Net Percent, Seasonally Adjusted
1966-01-01	-10
1966-04-01	-8
1966-07-01	-7
1966-10-01	22
1967-01-01	8
1967-04-01	10
1967-07-01	17
1967-10-01	22
1968-01-01	7
1968-04-01	10
1968-07-01	18
1968-10-01	24
1969-01-01	16
1969-04-01	16
1969-07-01	29
1969-10-01	38
1970-01-01	29
1970-04-01	9
1970-07-01	1
1970-10-01	16
1971-01-01	10
1971-04-01	-11
1971-07-01	-18
1971-10-01	-14
1972-01-01	-38
1972-04-01	-19
1972-07-01	1
1972-10-01	32
1973-01-01	26
1973-04-01	49
1973-07-01	57
1973-10-01	52
1974-01-01	33
1974-04-01	6
1974-07-01	-45
1974-10-01	-50
1975-01-01	-47
1975-04-01	-24
1975-07-01	-20
1975-10-01	-15
1976-01-01	-9
1976-04-01	-4
1976-07-01	-5
1976-10-01	1
1977-01-01	-2
1977-04-01	-11
1977-07-01	-12
1977-10-01	-3
1978-01-01	1
1978-04-01	5
1978-07-01	10
1978-10-01	19
1979-01-01	12
1979-04-01	16
1979-07-01	11
1979-10-01	21
1980-01-01	13
1980-04-01	3
1980-07-01	6
1980-10-01	15
1981-01-01	13
1981-04-01	17
1981-07-01	12
1981-10-01	4
1982-01-01	-18
1982-04-01	-41
1982-07-01	-51
1982-10-01	-53
1983-01-01	-55
1983-04-01	-25
1983-07-01	-4
1983-10-01	21
1984-01-01	23
1984-04-01	17
1984-07-01	11
1984-10-01	19
1985-01-01	2
1985-04-01	8
1985-07-01	13
1985-10-01	17
1986-01-01	-4
1986-04-01	-16
1986-07-01	-22
1986-10-01	-5
1987-01-01	-10
1987-04-01	-4
1987-07-01	10
1987-10-01	12
1988-01-01	12
1988-04-01	15
1988-07-01	26
1988-10-01	32
1989-01-01	17
1989-04-01	3
1989-07-01	-9
1989-10-01	-17
1990-01-01	-33
1990-04-01	-39
1990-07-01	-55
1990-10-01	-55
1991-01-01	-55
1991-04-01	-39
1991-07-01	-25
1991-10-01	-18
1992-01-01	-24
1992-04-01	-15
1992-07-01	-20
1992-10-01	-1
1993-01-01	1
1993-04-01	5
1993-07-01	-1
1993-10-01	15
1994-01-01	32
1994-04-01	20
1994-07-01	33
1994-10-01	28
1995-01-01	9
1995-04-01	-13
1995-07-01	-1
1995-10-01	-31
1996-01-01	-16
1996-04-01	-12
1996-07-01	-15
1996-10-01	-7
1997-01-01	-13
1997-04-01	-9
1997-07-01	-4
1997-10-01	3
1998-01-01	1
1998-04-01	-19
1998-07-01	-14
1998-10-01	10
1999-01-01	14
1999-04-01	17
1999-07-01	16
1999-10-01	30
2000-01-01	16
2000-04-01	0
2000-07-01	11
2000-10-01	-14
2001-01-01	-25
2001-04-01	-17
2001-07-01	-2
2001-10-01	9
2002-01-01	19
2002-04-01	29
2002-07-01	-4
2002-10-01	22
2003-01-01	27
2003-04-01	7
2003-07-01	15
2003-10-01	25
2004-01-01	13
2004-04-01	21
2004-07-01	8
2004-10-01	25
2005-01-01	9
2005-04-01	13
2005-07-01	1
2005-10-01	12
2006-01-01	1
2006-04-01	-5
2006-07-01	9
2006-10-01	26
2007-01-01	11
2007-04-01	20
2007-07-01	11
2007-10-01	27
2008-01-01	11
2008-04-01	12
2008-07-01	-3
2008-10-01	-13
2009-01-01	-40
2009-04-01	-17
2009-07-01	6
2009-10-01	13
2010-01-01	11
2010-04-01	16
2010-07-01	4
2010-10-01	14
2011-01-01	19
2011-04-01	-6
2011-07-01	-8
2011-10-01	5
2012-01-01	-7
2012-04-01	-5
2012-07-01	6
2012-10-01	5
2013-01-01	-7
2013-04-01	9
2013-07-01	-4
2013-10-01	32
2014-01-01	-1
2014-04-01	4
2014-07-01	8
2014-10-01	27
2015-01-01	13
2015-04-01	22
2015-07-01	16
2015-10-01	27
2016-01-01	25
2016-04-01	15
2016-07-01	21
2016-10-01	26
2017-01-01	36
2017-04-01	36
2017-07-01	39
2017-10-01	32
2018-01-01	21
2018-04-01	37