Quarter	Net Percent, Seasonally Adjusted
1990-10-01	16
1991-01-01	25
1991-04-01	23
1991-07-01	25
1991-10-01	26
1992-01-01	29
1992-04-01	29
1992-07-01	31
1992-10-01	28
1993-01-01	33
1993-04-01	23
1993-07-01	25
1993-10-01	29
1994-01-01	30
1994-04-01	26
1994-07-01	25
1994-10-01	23
1995-01-01	26
1995-04-01	25
1995-07-01	25
1995-10-01	23
1996-01-01	25
1996-04-01	23
1996-07-01	25
1996-10-01	23
1997-01-01	16
1997-04-01	23
1997-07-01	24
1997-10-01	29
1998-01-01	27
1998-04-01	24
1998-07-01	19
1998-10-01	22
1999-01-01	21
1999-04-01	22
1999-07-01	19
1999-10-01	21
2000-01-01	20
2000-04-01	20
2000-07-01	16
2000-10-01	16
2001-01-01	18
2001-04-01	18
2001-07-01	17
2001-10-01	16
2002-01-01	16
2002-04-01	18
2002-07-01	14
2002-10-01	17
2003-01-01	16
2003-04-01	14
2003-07-01	13
2003-10-01	17
2004-01-01	17
2004-04-01	19
2004-07-01	16
2004-10-01	17
2005-01-01	16
2005-04-01	17
2005-07-01	17
2005-10-01	17
2006-01-01	20
2006-04-01	20
2006-07-01	18
2006-10-01	20
2007-01-01	20
2007-04-01	18
2007-07-01	17
2007-10-01	18
2008-01-01	16
2008-04-01	17
2008-07-01	17
2008-10-01	23
2009-01-01	24
2009-04-01	16
2009-07-01	12
2009-10-01	10
2010-01-01	12
2010-04-01	13
2010-07-01	7
2010-10-01	13
2011-01-01	10
2011-04-01	-9
2011-07-01	1
2011-10-01	5
2012-01-01	9
2012-04-01	10
2012-07-01	12
2012-10-01	19
2013-01-01	14
2013-04-01	12
2013-07-01	10
2013-10-01	12
2014-01-01	8
2014-04-01	15
2014-07-01	16
2014-10-01	17
2015-01-01	16
2015-04-01	16
2015-07-01	15
2015-10-01	16
2016-01-01	12
2016-04-01	12
2016-07-01	10
2016-10-01	13
2017-01-01	13
2017-04-01	14
2017-07-01	12
2017-10-01	12
2018-01-01	13
2018-04-01	12
2018-07-01	11