Quarter	Net Percent
1966-01-01	21
1966-04-01	21
1966-07-01	21
1966-10-01	24
1967-01-01	34
1967-04-01	28
1967-07-01	34
1967-10-01	4
1968-01-01	17
1968-04-01	28
1968-07-01	40
1968-10-01	17
1969-01-01	34
1969-04-01	38
1969-07-01	39
1969-10-01	20
1970-01-01	35
1970-04-01	8
1970-07-01	40
1970-10-01	16
1971-01-01	7
1971-04-01	13
1971-07-01	17
1971-10-01	-22
1972-01-01	7
1972-04-01	21
1972-07-01	38
1972-10-01	27
1973-01-01	31
1973-04-01	38
1973-07-01	38
1973-10-01	4
1974-01-01	18
1974-04-01	-3
1974-07-01	-27
1974-10-01	-39
1975-01-01	4
1975-04-01	3
1975-07-01	3
1975-10-01	-18
1976-01-01	22
1976-04-01	18
1976-07-01	28
1976-10-01	-5
1977-01-01	8
1977-04-01	18
1977-07-01	20
1977-10-01	5
1978-01-01	29
1978-04-01	17
1978-07-01	23
1978-10-01	11
1979-01-01	36
1979-04-01	22
1979-07-01	26
1979-10-01	9
1980-01-01	22
1980-04-01	14
1980-07-01	35
1980-10-01	13
1981-01-01	38
1981-04-01	32
1981-07-01	23
1981-10-01	-4
1982-01-01	-6
1982-04-01	-17
1982-07-01	-32
1982-10-01	-52
1983-01-01	-23
1983-04-01	6
1983-07-01	21
1983-10-01	13
1984-01-01	26
1984-04-01	12
1984-07-01	19
1984-10-01	-7
1985-01-01	11
1985-04-01	14
1985-07-01	19
1985-10-01	15
1986-01-01	7
1986-04-01	-18
1986-07-01	-21
1986-10-01	-13
1987-01-01	7
1987-04-01	10
1987-07-01	42
1987-10-01	-3
1988-01-01	23
1988-04-01	32
1988-07-01	36
1988-10-01	44
1989-01-01	15
1989-04-01	8
1989-07-01	5
1989-10-01	-21
1990-01-01	-19
1990-04-01	-9
1990-07-01	-29
1990-10-01	-35
1991-01-01	-29
1991-04-01	-9
1991-07-01	-1
1991-10-01	-7
1992-01-01	-2
1992-04-01	-10
1992-07-01	17
1992-10-01	2
1993-01-01	13
1993-04-01	15
1993-07-01	12
1993-10-01	15
1994-01-01	29
1994-04-01	31
1994-07-01	40
1994-10-01	11
1995-01-01	5
1995-04-01	-6
1995-07-01	17
1995-10-01	-15
1996-01-01	24
1996-04-01	6
1996-07-01	7
1996-10-01	9
1997-01-01	28
1997-04-01	15
1997-07-01	21
1997-10-01	8
1998-01-01	0
1998-04-01	-9
1998-07-01	7
1998-10-01	8
1999-01-01	16
1999-04-01	29
1999-07-01	26
1999-10-01	19
2000-01-01	28
2000-04-01	7
2000-07-01	21
2000-10-01	-3
2001-01-01	-6
2001-04-01	6
2001-07-01	26
2001-10-01	-7
2002-01-01	26
2002-04-01	19
2002-07-01	23
2002-10-01	9
2003-01-01	21
2003-04-01	23
2003-07-01	47
2003-10-01	4
2004-01-01	20
2004-04-01	20
2004-07-01	27
2004-10-01	10
2005-01-01	24
2005-04-01	18
2005-07-01	7
2005-10-01	9
2006-01-01	13
2006-04-01	11
2006-07-01	32
2006-10-01	7
2007-01-01	29
2007-04-01	21
2007-07-01	31
2007-10-01	23
2008-01-01	8
2008-04-01	2
2008-07-01	18
2008-10-01	-34
2009-01-01	-22
2009-04-01	5
2009-07-01	26
2009-10-01	7
2010-01-01	31
2010-04-01	13
2010-07-01	26
2010-10-01	9
2011-01-01	37
2011-04-01	13
2011-07-01	4
2011-10-01	-8
2012-01-01	16
2012-04-01	11
2012-07-01	17
2012-10-01	-5
2013-01-01	28
2013-04-01	16
2013-07-01	21