Quarter	Net Percent
1961-04-01	23
1961-07-01	14
1961-10-01	-2
1962-01-01	-16
1962-04-01	-16
1962-07-01	-5
1962-10-01	10
1963-01-01	23
1963-04-01	39
1963-07-01	41
1963-10-01	48
1964-01-01	33
1964-04-01	29
1964-07-01	39
1964-10-01	50
1965-01-01	34
1965-04-01	39
1965-07-01	35
1965-10-01	42
1966-01-01	17
1966-04-01	20
1966-07-01	20
1966-10-01	24
1967-01-01	-14
1967-04-01	-23
1967-07-01	-47
1967-10-01	-36
1968-01-01	-22
1968-04-01	-6
1968-07-01	31
1968-10-01	55
1969-01-01	41
1969-04-01	36
1969-07-01	48
1969-10-01	53
1970-01-01	42
1970-04-01	36
1970-07-01	35
1970-10-01	36
1971-01-01	11
1971-04-01	-11
1971-07-01	-7
1971-10-01	-4
1972-01-01	-17
1972-04-01	2
1972-07-01	31
1972-10-01	49
1973-01-01	65
1973-04-01	69
1973-07-01	61
1973-10-01	62
1974-01-01	47
1974-04-01	39
1974-07-01	13
1974-10-01	-28
1975-01-01	-54
1975-04-01	-31
1975-07-01	-35
1975-10-01	-13
1976-01-01	-3
1976-04-01	-6
1976-07-01	-6
1976-10-01	16
1977-01-01	4
1977-04-01	-19
1977-07-01	-40
1977-10-01	-46
1978-01-01	-48
1978-04-01	-34
1978-07-01	-3
1978-10-01	19
1979-01-01	24
1979-04-01	18
1979-07-01	-1
1979-10-01	4
1980-01-01	-18
1980-04-01	-33
1980-07-01	-26
1980-10-01	-16
1981-01-01	-3
1981-04-01	21
1981-07-01	33
1981-10-01	42
1982-01-01	26
1982-04-01	14
1982-07-01	-18
1982-10-01	-46
1983-01-01	-49
1983-04-01	-25
1983-07-01	4
1983-10-01	41
1984-01-01	55
1984-04-01	48
1984-07-01	41
1984-10-01	48
1985-01-01	32
1985-04-01	14
1985-07-01	-16
1985-10-01	-33
1986-01-01	-25
1986-04-01	-27
1986-07-01	-5
1986-10-01	-3
1987-01-01	-6
1987-04-01	-26
1987-07-01	-21
1987-10-01	-31
1988-01-01	-43
1988-04-01	-48
1988-07-01	-43
1988-10-01	-26
1989-01-01	-9
1989-04-01	6
1989-07-01	15
1989-10-01	14
1990-01-01	-1
1990-04-01	-8
1990-07-01	-25
1990-10-01	-13
1991-01-01	-44
1991-04-01	-41
1991-07-01	-30
1991-10-01	-4
1992-01-01	10
1992-04-01	11
1992-07-01	16
1992-10-01	37
1993-01-01	34
1993-04-01	25
1993-07-01	31
1993-10-01	40
1994-01-01	38
1994-04-01	31
1994-07-01	38
1994-10-01	49
1995-01-01	16
1995-04-01	10
1995-07-01	-1
1995-10-01	10
1996-01-01	1
1996-04-01	-7
1996-07-01	-23
1996-10-01	10
1997-01-01	-26
1997-04-01	-31
1997-07-01	-27
1997-10-01	-11
1998-01-01	-20
1998-04-01	-34
1998-07-01	-28
1998-10-01	-3
1999-01-01	8
1999-04-01	12
1999-07-01	22
1999-10-01	38
2000-01-01	28
2000-04-01	-12
2000-07-01	-12
2000-10-01	18
2001-01-01	1
2001-04-01	9
2001-07-01	5
2001-10-01	24
2002-01-01	17
2002-04-01	20
2002-07-01	21
2002-10-01	32
2003-01-01	6
2003-04-01	-3
2003-07-01	7
2003-10-01	28
2004-01-01	18
2004-04-01	14
2004-07-01	15
2004-10-01	21
2005-01-01	2
2005-04-01	-2
2005-07-01	-10
2005-10-01	-8
2006-01-01	-19
2006-04-01	-19
2006-07-01	3
2006-10-01	5
2007-01-01	-5
2007-04-01	-1
2007-07-01	-6
2007-10-01	-5
2008-01-01	-8
2008-04-01	-21
2008-07-01	-37
2008-10-01	-42
2009-01-01	-60
2009-04-01	-41
2009-07-01	-27
2009-10-01	8
2010-01-01	6
2010-04-01	13
2010-07-01	-19
2010-10-01	1
2011-01-01	-3
2011-04-01	3
2011-07-01	-4
2011-10-01	-6
2012-01-01	-6
2012-04-01	5
2012-07-01	-16
2012-10-01	22
2013-01-01	14