Quarter	Net Percent, Seasonally Adjusted
1996-01-01	-8.7
1996-04-01	-7.4
1996-07-01	-7.9
1996-10-01	-8.1
1997-01-01	-7.6
1997-04-01	-4.4
1997-07-01	-7.1
1997-10-01	-5
1998-01-01	-5.5
1998-04-01	-12.5
1998-07-01	-14.2
1998-10-01	-16.8
1999-01-01	-6.3
1999-04-01	-18.6
1999-07-01	-11.5
1999-10-01	-12.7
2000-01-01	-7.9
2000-04-01	-6.9
2000-07-01	-7.7
2000-10-01	-10.6
2001-01-01	-13.6
2001-04-01	-15.1
2001-07-01	-20.0
2001-10-01	-18.4
2002-01-01	-18.3
2002-04-01	-14.4
2002-07-01	-18.2
2002-10-01	-20.2
2003-01-01	-22.1
2003-04-01	-23.1
2003-07-01	-16.5
2003-10-01	-13.1
2004-01-01	-9.5
2004-04-01	-6.8
2004-07-01	-6.9
2004-10-01	-6.4
2005-01-01	-1.5
2005-04-01	-6.1
2005-07-01	-3
2005-10-01	-2.6
2006-01-01	0.8
2006-04-01	3.0
2006-07-01	5.5
2006-10-01	7.5
2007-01-01	3.2
2007-04-01	1.8
2007-07-01	1.0
2007-10-01	0.7
2008-01-01	-1.7
2008-04-01	-3.9
2008-07-01	-12.7
2008-10-01	-23.5
2009-01-01	-28.4
2009-04-01	-29.7
2009-07-01	-28.8
2009-10-01	-27.2
2010-01-01	-22.9
2010-04-01	-21.1
2010-07-01	-17.4
2010-10-01	-12.4
2011-01-01	-10.3
2011-04-01	-11.3
2011-07-01	-16.9
2011-10-01	-10.1
2012-01-01	-13.6
2012-04-01	-12.1
2012-07-01	-12.6
2012-10-01	-11.5
2013-01-01	-14.2
2013-04-01	-13.5
2013-07-01	-7.6
2013-10-01	-7.2
2014-01-01	-4.2
2014-04-01	-4.5
2014-07-01	-6.0
2014-10-01	-10.6
2015-01-01	-11.3
2015-04-01	-14.1
2015-07-01	-13.9
2015-10-01	-10.3
2016-01-01	-15.1
2016-04-01	-15.1
2016-07-01	-16.6
2016-10-01	-15.2
2017-01-01	-14.0
2017-04-01	-11.7
2017-07-01	-11.4
2017-10-01	-10.6
2018-01-01	-9.1
2018-04-01	-8.9
2018-07-01	-7.0