Quarter	Net Percent, Seasonally Adjusted
1998-10-01	-84
1999-01-01	-76
1999-04-01	-74
1999-07-01	-80
1999-10-01	-71
2000-01-01	-69
2000-04-01	-66
2000-07-01	-70
2000-10-01	-72
2001-01-01	-74
2001-04-01	-72
2001-07-01	-68
2001-10-01	-72
2002-01-01	-75
2002-04-01	-70
2002-07-01	-70
2002-10-01	-72
2003-01-01	-76
2003-04-01	-70
2003-07-01	-70
2003-10-01	-73
2004-01-01	-71
2004-04-01	-70
2004-07-01	-72
2004-10-01	-79
2005-01-01	-78
2005-04-01	-74
2005-07-01	-72
2005-10-01	-72
2006-01-01	-80
2006-04-01	-73
2006-07-01	-73
2006-10-01	-73
2007-01-01	-73
2007-04-01	-69
2007-07-01	-76
2007-10-01	-82
2008-01-01	-80
2008-04-01	-83
2008-07-01	-80
2008-10-01	-84
2009-01-01	-84
2009-04-01	-75
2009-07-01	-75
2009-10-01	-73
2010-01-01	-72
2010-04-01	-66
2010-07-01	-77
2010-10-01	-77
2011-01-01	-78
2011-04-01	-73
2011-07-01	-69
2011-10-01	-70
2012-01-01	-69
2012-04-01	-67
2012-07-01	-70
2012-10-01	-72
2013-01-01	-72
2013-04-01	-67
2013-07-01	-69
2013-10-01	-74
2014-01-01	-74
2014-04-01	-70
2014-07-01	-71
2014-10-01	-79
2015-01-01	-78
2015-04-01	-63
2015-07-01	-73
2015-10-01	-75
2016-01-01	-75
2016-04-01	-71
2016-07-01	-68
2016-10-01	-67
2017-01-01	-64
2017-04-01	-61
2017-07-01	-62
2017-10-01	-61
2018-01-01	-57
2018-04-01	-60
2018-07-01	-67