Quarter	Net Percent
1961-04-01	-58
1961-07-01	-57
1961-10-01	-67
1962-01-01	-28
1962-04-01	-7
1962-07-01	-2
1962-10-01	27
1963-01-01	48
1963-04-01	61
1963-07-01	51
1963-10-01	30
1964-01-01	29
1964-04-01	34
1964-07-01	43
1964-10-01	17
1965-01-01	21
1965-04-01	6
1965-07-01	-9
1965-10-01	-35
1966-01-01	-20
1966-04-01	-36
1966-07-01	-24
1966-10-01	-57
1967-01-01	-73
1967-04-01	-66
1967-07-01	-41
1967-10-01	-56
1968-01-01	-19
1968-04-01	20
1968-07-01	65
1968-10-01	59
1969-01-01	46
1969-04-01	43
1969-07-01	43
1969-10-01	32
1970-01-01	5
1970-04-01	-8
1970-07-01	-10
1970-10-01	-45
1971-01-01	-44
1971-04-01	-5
1971-07-01	7
1971-10-01	17
1972-01-01	8
1972-04-01	65
1972-07-01	67
1972-10-01	73
1973-01-01	51
1973-04-01	42
1973-07-01	10
1973-10-01	-52
1974-01-01	-21
1974-04-01	-60
1974-07-01	-59
1974-10-01	-77
1975-01-01	-38
1975-04-01	-31
1975-07-01	-39
1975-10-01	-44
1976-01-01	-28
1976-04-01	-35
1976-07-01	-7
1976-10-01	-49
1977-01-01	-44
1977-04-01	-54
1977-07-01	-63
1977-10-01	-57
1978-01-01	-15
1978-04-01	29
1978-07-01	29
1978-10-01	-24
1979-01-01	-36
1979-04-01	-39
1979-07-01	-19
1979-10-01	-48
1980-01-01	-30
1980-04-01	-36
1980-07-01	-27
1980-10-01	-13
1981-01-01	27
1981-04-01	38
1981-07-01	36
1981-10-01	-10
1982-01-01	-26
1982-04-01	-42
1982-07-01	-47
1982-10-01	-62
1983-01-01	-23
1983-04-01	11
1983-07-01	48
1983-10-01	42
1984-01-01	28
1984-04-01	-17
1984-07-01	-12
1984-10-01	-10
1985-01-01	-29
1985-04-01	-41
1985-07-01	-58
1985-10-01	-65
1986-01-01	-61
1986-04-01	-20
1986-07-01	-12
1986-10-01	-21
1987-01-01	-30
1987-04-01	-24
1987-07-01	-17
1987-10-01	-60
1988-01-01	-52
1988-04-01	-31
1988-07-01	4
1988-10-01	2
1989-01-01	-7
1989-04-01	18
1989-07-01	55
1989-10-01	9
1990-01-01	-8
1990-04-01	4
1990-07-01	-23
1990-10-01	-47
1991-01-01	-56
1991-04-01	-8
1991-07-01	-10
1991-10-01	-2
1992-01-01	45
1992-04-01	47
1992-07-01	52
1992-10-01	62
1993-01-01	55
1993-04-01	52
1993-07-01	54
1993-10-01	60
1994-01-01	63
1994-04-01	56
1994-07-01	44
1994-10-01	19
1995-01-01	-11
1995-04-01	-10
1995-07-01	-2
1995-10-01	11
1996-01-01	-5
1996-04-01	-34
1996-07-01	-9
1996-10-01	11
1997-01-01	-14
1997-04-01	-21
1997-07-01	-5
1997-10-01	-23
1998-01-01	-41
1998-04-01	-48
1998-07-01	-23
1998-10-01	21
1999-01-01	41
1999-04-01	33
1999-07-01	23
1999-10-01	22
2000-01-01	-1
2000-04-01	-47
2000-07-01	-45
2000-10-01	24
2001-01-01	-8
2001-04-01	1
2001-07-01	-42
2001-10-01	-4
2002-01-01	26
2002-04-01	-5
2002-07-01	-7
2002-10-01	-8
2003-01-01	-35
2003-04-01	-23
2003-07-01	-6
2003-10-01	-2
2004-01-01	-25
2004-04-01	-21
2004-07-01	-16
2004-10-01	-14
2005-01-01	-35
2005-04-01	-35
2005-07-01	-31
2005-10-01	-64
2006-01-01	-50
2006-04-01	-46
2006-07-01	-24
2006-10-01	3
2007-01-01	-15
2007-04-01	-41
2007-07-01	-24
2007-10-01	-30
2008-01-01	-70
2008-04-01	-58
2008-07-01	-19
2008-10-01	-65
2009-01-01	-62
2009-04-01	-15
2009-07-01	33
2009-10-01	34
2010-01-01	25
2010-04-01	27
2010-07-01	3
2010-10-01	14
2011-01-01	-13
2011-04-01	25
2011-07-01	17
2011-10-01	-8
2012-01-01	15
2012-04-01	8
2012-07-01	10
2012-10-01	25
2013-01-01	29