Quarter	Net Percent
1978-01-01	34
1978-04-01	37
1978-07-01	24
1978-10-01	10
1979-01-01	6
1979-04-01	-4
1979-07-01	19
1979-10-01	22
1980-01-01	23
1980-04-01	42
1980-07-01	30
1980-10-01	31
1981-01-01	26
1981-04-01	19
1981-07-01	13
1981-10-01	15
1982-01-01	25
1982-04-01	17
1982-07-01	35
1982-10-01	44
1983-01-01	42
1983-04-01	27
1983-07-01	13
1983-10-01	8
1984-01-01	-1
1984-04-01	2
1984-07-01	5
1984-10-01	8
1985-01-01	6
1985-04-01	11
1985-07-01	36
1985-10-01	39
1986-01-01	27
1986-04-01	28
1986-07-01	19
1986-10-01	22
1987-01-01	21
1987-04-01	32
1987-07-01	33
1987-10-01	43
1988-01-01	41
1988-04-01	45
1988-07-01	36
1988-10-01	40
1989-01-01	27
1989-04-01	29
1989-07-01	35
1989-10-01	36
1990-01-01	45
1990-04-01	36
1990-07-01	42
1990-10-01	38
1991-01-01	48
1991-04-01	37
1991-07-01	33
1991-10-01	28
1992-01-01	18
1992-04-01	17
1992-07-01	27
1992-10-01	13
1993-01-01	19
1993-04-01	15
1993-07-01	21
1993-10-01	20
1994-01-01	20
1994-04-01	21
1994-07-01	15
1994-10-01	10
1995-01-01	13
1995-04-01	26
1995-07-01	33
1995-10-01	30
1996-01-01	30
1996-04-01	24
1996-07-01	39
1996-10-01	24
1997-01-01	31
1997-04-01	26
1997-07-01	26
1997-10-01	22
1998-01-01	27
1998-04-01	32
1998-07-01	35
1998-10-01	26
1999-01-01	25
1999-04-01	25
1999-07-01	23
1999-10-01	20
2000-01-01	24
2000-04-01	23
2000-07-01	20
2000-10-01	18
2001-01-01	29
2001-04-01	17
2001-07-01	16
2001-10-01	20
2002-01-01	13
2002-04-01	21
2002-07-01	19
2002-10-01	16
2003-01-01	16
2003-04-01	13
2003-07-01	16
2003-10-01	10
2004-01-01	20
2004-04-01	19
2004-07-01	15
2004-10-01	14
2005-01-01	21
2005-04-01	25
2005-07-01	23
2005-10-01	24
2006-01-01	25
2006-04-01	19
2006-07-01	11
2006-10-01	23
2007-01-01	19
2007-04-01	12
2007-07-01	15
2007-10-01	24
2008-01-01	18
2008-04-01	22
2008-07-01	25
2008-10-01	31
2009-01-01	37
2009-04-01	27
2009-07-01	24
2009-10-01	14
2010-01-01	6
2010-04-01	17
2010-07-01	24
2010-10-01	18
2011-01-01	24
2011-04-01	17
2011-07-01	24
2011-10-01	28
2012-01-01	32
2012-04-01	28
2012-07-01	18
2012-10-01	21
2013-01-01	20