Quarter	Net Percent, Seasonally Adjusted
1998-01-01	5
1998-04-01	-5
1998-07-01	-39
1998-10-01	-27
1999-01-01	-20
1999-04-01	-18
1999-07-01	-12
1999-10-01	1
2000-01-01	-2
2000-04-01	0
2000-07-01	4
2000-10-01	6
2001-01-01	6
2001-04-01	7
2001-07-01	15
2001-10-01	12
2002-01-01	6
2002-04-01	8
2002-07-01	10
2002-10-01	10
2003-01-01	10
2003-04-01	12
2003-07-01	11
2003-10-01	13
2004-01-01	16
2004-04-01	16
2004-07-01	15
2004-10-01	17
2005-01-01	20
2005-04-01	17
2005-07-01	18
2005-10-01	13
2006-01-01	19
2006-04-01	17
2006-07-01	15
2006-10-01	15
2007-01-01	21
2007-04-01	21
2007-07-01	21
2007-10-01	20
2008-01-01	19
2008-04-01	22
2008-07-01	18
2008-10-01	10
2009-01-01	2
2009-04-01	8
2009-07-01	9
2009-10-01	9
2010-01-01	15
2010-04-01	17
2010-07-01	16
2010-10-01	14
2011-01-01	11
2011-04-01	11
2011-07-01	11
2011-10-01	9
2012-01-01	16
2012-04-01	16
2012-07-01	13
2012-10-01	12
2013-01-01	16
2013-04-01	15
2013-07-01	13
2013-10-01	14
2014-01-01	16
2014-04-01	12
2014-07-01	11
2014-10-01	5
2015-01-01	6
2015-04-01	9
2015-07-01	5
2015-10-01	4
2016-01-01	4
2016-04-01	8
2016-07-01	6
2016-10-01	6
2017-01-01	8
2017-04-01	9
2017-07-01	7
2017-10-01	7
2018-01-01	8
2018-04-01	9
2018-07-01	7