Quarter	Net Percent
1963-07-01	4
1963-10-01	5
1964-01-01	8
1964-04-01	20
1964-07-01	44
1964-10-01	13
1965-01-01	4
1965-04-01	8
1965-07-01	9
1965-10-01	7
1966-01-01	18
1966-04-01	20
1966-07-01	22
1966-10-01	30
1967-01-01	16
1967-04-01	5
1967-07-01	-6
1967-10-01	37
1968-01-01	28
1968-04-01	13
1968-07-01	34
1968-10-01	25
1969-01-01	23
1969-04-01	20
1969-07-01	26
1969-10-01	35
1970-01-01	38
1970-04-01	57
1970-07-01	57
1970-10-01	52
1971-01-01	43
1971-04-01	43
1971-07-01	49
1971-10-01	46
1972-01-01	17
1972-04-01	21
1972-07-01	37
1972-10-01	45
1973-01-01	46
1973-04-01	44
1973-07-01	47
1973-10-01	41
1974-01-01	59
1974-04-01	71
1974-07-01	58
1974-10-01	39
1975-01-01	49
1975-04-01	52
1975-07-01	65
1975-10-01	65
1976-01-01	63
1976-04-01	62
1976-07-01	29
1976-10-01	77
1977-01-01	71
1977-04-01	55
1977-07-01	58
1977-10-01	55
1978-01-01	53
1978-04-01	50
1978-07-01	51
1978-10-01	65
1979-01-01	64
1979-04-01	65
1979-07-01	72
1979-10-01	69
1980-01-01	71
1980-04-01	59
1980-07-01	65
1980-10-01	71
1981-01-01	68
1981-04-01	73
1981-07-01	74
1981-10-01	64
1982-01-01	65
1982-04-01	43
1982-07-01	13
1982-10-01	5
1983-01-01	15
1983-04-01	14
1983-07-01	22
1983-10-01	41
1984-01-01	67
1984-04-01	46
1984-07-01	68
1984-10-01	77
1985-01-01	69
1985-04-01	64
1985-07-01	53
1985-10-01	46
1986-01-01	67
1986-04-01	41
1986-07-01	47
1987-01-01	46
1987-04-01	40
1987-07-01	31
1987-10-01	28
1988-01-01	15
1988-04-01	-4
1988-07-01	-1
1988-10-01	19
1989-01-01	19
1989-04-01	30
1989-07-01	22
1989-10-01	16
1990-01-01	18
1990-04-01	13
1990-07-01	5
1990-10-01	5
1991-01-01	-9
1991-04-01	-7
1991-07-01	-10
1991-10-01	-5
1992-01-01	4
1992-04-01	12
1992-07-01	11
1992-10-01	15
1993-01-01	19
1993-04-01	21
1993-07-01	12
1993-10-01	7
1994-01-01	4
1994-04-01	1
1994-07-01	22
1994-10-01	25
1995-01-01	20
1995-04-01	11
1995-07-01	7
1995-10-01	9
1996-01-01	2
1996-04-01	-9
1996-07-01	1
1996-10-01	9
1997-01-01	-10
1997-04-01	-17
1997-07-01	-15
1997-10-01	-1
1998-01-01	-9
1998-04-01	-2
1998-07-01	-5
1998-10-01	-12
1999-01-01	-3
1999-04-01	-3
1999-07-01	12
1999-10-01	15
2000-01-01	18
2000-04-01	15
2000-07-01	29
2000-10-01	30
2001-01-01	23
2001-04-01	14
2001-07-01	19
2001-10-01	14
2002-01-01	12
2002-04-01	5
2002-07-01	13
2002-10-01	9
2003-01-01	15
2003-04-01	2
2003-07-01	6
2003-10-01	6
2004-01-01	18
2004-04-01	24
2004-07-01	27
2004-10-01	20
2005-01-01	17
2005-04-01	14
2005-07-01	18
2005-10-01	6
2006-01-01	25
2006-04-01	27
2006-07-01	31
2006-10-01	26
2007-01-01	30
2007-04-01	17
2007-07-01	32
2007-10-01	22
2008-01-01	19
2008-04-01	44
2008-07-01	25
2008-10-01	1
2009-01-01	-12
2009-04-01	0
2009-07-01	-2
2009-10-01	13
2010-01-01	7
2010-04-01	26
2010-07-01	5
2010-10-01	7
2011-01-01	10
2011-04-01	20
2011-07-01	4
2011-10-01	4
2012-01-01	7
2012-04-01	4
2012-07-01	7
2012-10-01	1
2013-01-01	7