Quarter	Net Percent, Seasonally Adjusted
1991-01-01	-22
1991-04-01	-14
1991-07-01	-9
1991-10-01	-2
1992-01-01	6
1992-04-01	8
1992-07-01	10
1992-10-01	12
1993-01-01	16
1993-04-01	11
1993-07-01	17
1993-10-01	23
1994-01-01	21
1994-04-01	19
1994-07-01	18
1994-10-01	19
1995-01-01	15
1995-04-01	21
1995-07-01	24
1995-10-01	21
1996-01-01	18
1996-04-01	12
1996-07-01	13
1996-10-01	14
1997-01-01	21
1997-04-01	19
1997-07-01	25
1997-10-01	31
1998-01-01	32
1998-04-01	35
1998-07-01	36
1998-10-01	33
1999-01-01	33
1999-04-01	29
1999-07-01	29
1999-10-01	28
2000-01-01	29
2000-04-01	32
2000-07-01	28
2000-10-01	32
2001-01-01	40
2001-04-01	43
2001-07-01	43
2001-10-01	48
2002-01-01	48
2002-04-01	45
2002-07-01	44
2002-10-01	44
2003-01-01	48
2003-04-01	42
2003-07-01	40
2003-10-01	50
2004-01-01	47
2004-04-01	44
2004-07-01	41
2004-10-01	40
2005-01-01	42
2005-04-01	39
2005-07-01	33
2005-10-01	34
2006-01-01	34
2006-04-01	32
2006-07-01	32
2006-10-01	33
2007-01-01	34
2007-04-01	32
2007-07-01	33
2007-10-01	32
2008-01-01	28
2008-04-01	23
2008-07-01	27
2008-10-01	39
2009-01-01	47
2009-04-01	42
2009-07-01	42
2009-10-01	44
2010-01-01	46
2010-04-01	43
2010-07-01	42
2010-10-01	40
2011-01-01	38
2011-04-01	35
2011-07-01	32
2011-10-01	30
2012-01-01	28
2012-04-01	29
2012-07-01	25
2012-10-01	25
2013-01-01	15
2013-04-01	10
2013-07-01	7
2013-10-01	3
2014-01-01	-6
2014-04-01	-8
2014-07-01	-5
2014-10-01	-4
2015-01-01	-2
2015-04-01	-1
2015-07-01	3
2015-10-01	4
2016-01-01	5
2016-04-01	6
2016-07-01	5
2016-10-01	6
2017-01-01	4
2017-04-01	3
2017-07-01	4
2017-10-01	-1
2018-01-01	-1
2018-04-01	0
2018-07-01	-3