Quarter	Net Percent, Seasonally Adjusted
1998-01-01	-9.7
1998-04-01	-91.7
1998-07-01	22.9
1998-10-01	-82.3
1999-01-01	-29.5
1999-04-01	-0.4
1999-07-01	-17.0
1999-10-01	-40.2
2000-01-01	-9.4
2000-04-01	-6.4
2000-07-01	0.5
2000-10-01	18.3
2001-01-01	26.8
2001-04-01	11.9
2001-07-01	-2.7
2001-10-01	-13.9
2002-01-01	-10.6
2002-04-01	12.5
2002-07-01	10.8
2002-10-01	8.8
2003-01-01	1.8
2003-04-01	3.0
2003-07-01	21.3
2003-10-01	24.7
2004-01-01	25.7
2004-04-01	28
2004-07-01	29
2004-10-01	21.5
2005-01-01	20.7
2005-04-01	29.2
2005-07-01	30.2
2005-10-01	36.3
2006-01-01	39.1
2006-04-01	26.8
2006-07-01	35.8
2006-10-01	39.2
2007-01-01	44.4
2007-04-01	34.7
2007-07-01	21.9
2007-10-01	1.4
2008-01-01	8.8
2008-04-01	-5.4
2008-07-01	-14.7
2008-10-01	-26.7
2009-01-01	-42.9
2009-04-01	-49.7
2009-07-01	-32.9
2009-10-01	-16.9
2010-01-01	-8
2010-04-01	17.8
2010-07-01	16.5
2010-10-01	37.4
2011-01-01	28.6
2011-04-01	31.8
2011-07-01	19.7
2011-10-01	12.1
2012-01-01	6.2
2012-04-01	13
2012-07-01	6.9
2012-10-01	-7.8
2013-01-01	-8.4
2013-04-01	-10.5
2013-07-01	8.2
2013-10-01	10.1
2014-01-01	0.8
2014-04-01	-2.4
2014-07-01	-5.3
2014-10-01	1.0
2015-01-01	-3.1
2015-04-01	2.0
2015-07-01	-1.0
2015-10-01	2.6
2016-01-01	9.6
2016-04-01	8.4
2016-07-01	6.1
2016-10-01	11.8
2017-01-01	11.0
2017-04-01	20.1
2017-07-01	15.4
2017-10-01	15.0
2018-01-01	9.2
2018-04-01	1.6
2018-07-01	6.5
2018-10-01	-1.3