Quarter	Percent, Seasonally Adjusted
1998-07-01	0
1998-10-01	15
1999-01-01	18
1999-04-01	35
1999-07-01	23
1999-10-01	38
2000-01-01	33
2000-04-01	36
2000-07-01	35
2000-10-01	27
2001-01-01	30
2001-04-01	17
2001-07-01	11
2001-10-01	1
2002-01-01	26
2002-04-01	38
2002-07-01	31
2002-10-01	22
2003-01-01	34
2003-04-01	18
2003-07-01	33
2003-10-01	27
2004-01-01	31
2004-04-01	32
2004-07-01	33
2004-10-01	38
2005-01-01	39
2005-04-01	32
2005-07-01	51
2005-10-01	50
2006-01-01	43
2006-04-01	35
2006-07-01	41
2006-10-01	40
2007-01-01	45
2007-04-01	34
2007-07-01	37
2007-10-01	30
2008-01-01	33
2008-04-01	33
2008-07-01	28
2008-10-01	-8
2009-01-01	-1
2009-04-01	22
2009-07-01	27
2009-10-01	41
2010-01-01	38
2010-04-01	40
2010-07-01	25
2010-10-01	41
2011-01-01	37
2011-04-01	53
2011-07-01	38
2011-10-01	45
2012-01-01	43
2012-04-01	53
2012-07-01	26
2012-10-01	28
2013-01-01	32
2013-04-01	35
2013-07-01	30
2013-10-01	42
2014-01-01	46
2014-04-01	28
2014-07-01	44
2014-10-01	31
2015-01-01	20
2015-04-01	26
2015-07-01	28
2015-10-01	12
2016-01-01	26
2016-04-01	21
2016-07-01	31
2016-10-01	37
2017-01-01	38
2017-04-01	58
2017-07-01	34
2017-10-01	40
2018-01-01	45
2018-04-01	51
2018-07-01	39