Quarter	Percent, Seasonally Adjusted
1964-01-01	1.5
1964-04-01	1.6
1964-07-01	1.5
1964-10-01	1.5
1965-01-01	1.3
1965-04-01	1.4
1965-07-01	1.4
1965-10-01	1.3
1966-01-01	1.6
1966-04-01	1.5
1966-07-01	1.3
1966-10-01	1.5
1967-01-01	2.2
1967-04-01	2.5
1967-07-01	3.4
1967-10-01	4.2
1968-01-01	3.9
1968-04-01	4.0
1968-07-01	4.1
1968-10-01	3.7
1969-01-01	3.3
1969-04-01	3.1
1969-07-01	2.5
1969-10-01	2.2
1970-01-01	2.7
1970-04-01	2.8
1970-07-01	2.6
1970-10-01	2.5
1971-01-01	2.7
1971-04-01	3.0
1971-07-01	3.1
1971-10-01	3.2
1972-01-01	3.5
1972-04-01	3.2
1972-07-01	3.3
1972-10-01	3.2
1973-01-01	3.3
1973-04-01	3.1
1973-07-01	2.9
1973-10-01	2.9
1974-01-01	2.4
1974-04-01	2.4
1974-07-01	2.6
1974-10-01	2.5
1975-01-01	2.1
1975-04-01	2.5
1975-07-01	3.3
1975-10-01	3.9
1976-01-01	3.8
1976-04-01	4.6
1976-07-01	4.8
1976-10-01	4.8
1977-01-01	5.6
1977-04-01	6.6
1977-07-01	6.9
1977-10-01	7.2
1978-01-01	8.0
1978-04-01	7.8
1978-07-01	7.8
1978-10-01	7.9
1979-01-01	7.4
1979-04-01	6.6
1979-07-01	6.2
1979-10-01	5.9
1980-01-01	5.3
1980-04-01	5.2
1980-07-01	5.3
1980-10-01	5.4
1981-01-01	5.3
1981-04-01	5.6
1981-07-01	6.0
1981-10-01	6.1
1982-01-01	6.2
1982-04-01	5.9
1982-07-01	6.0
1982-10-01	6.1
1983-01-01	6.2
1983-04-01	6.3
1983-07-01	6.0
1983-10-01	6.0
1984-01-01	6.0
1984-04-01	6.0
1984-07-01	5.9
1984-10-01	5.9
1985-01-01	6.1
1985-04-01	6.0
1985-07-01	6.1
1985-10-01	6.0
1986-01-01	6.6
1986-04-01	6.8
1986-07-01	6.8
1986-10-01	6.5
1987-01-01	5.3
1987-04-01	4.9
1987-07-01	4.7
1987-10-01	4.7
1988-01-01	4.6
1988-04-01	4.3
1988-07-01	4.1
1988-10-01	3.8
1989-01-01	3.4
1989-04-01	3.1
1989-07-01	3.0
1989-10-01	2.9
1990-01-01	2.9
1990-04-01	2.9
1990-07-01	3.2
1990-10-01	3.7
1991-01-01	4.6
1991-04-01	5.9
1991-07-01	7.4
1991-10-01	8.7
1992-01-01	9.9
1992-04-01	10.9
1992-07-01	12.2
1992-10-01	13.4
1993-01-01	14.6
1993-04-01	16.0
1993-07-01	16.8
1993-10-01	17.4
1994-01-01	17.6
1994-04-01	17.2
1994-07-01	16.4
1994-10-01	15.8
1995-01-01	15.3
1995-04-01	14.9
1995-07-01	15.0
1995-10-01	15.3
1996-01-01	15.3
1996-04-01	15.1
1996-07-01	14.9
1996-10-01	14.4
1997-01-01	13.6
1997-04-01	12.8
1997-07-01	12.3
1997-10-01	12.0
1998-01-01	11.8
1998-04-01	11.6
1998-07-01	11.2
1998-10-01	10.9
1999-01-01	10.6
1999-04-01	10.3
1999-07-01	10.1
1999-10-01	10.0
2000-01-01	9.9
2000-04-01	9.6
2000-07-01	9.5
2000-10-01	9.3
2001-01-01	9.2
2001-04-01	9.1
2001-07-01	9.1
2001-10-01	9.1
2002-01-01	9.1
2002-04-01	9.2
2002-07-01	9.1
2002-10-01	9.0
2003-01-01	9.1
2003-04-01	9.2
2003-07-01	9.0
2003-10-01	9.0
2004-01-01	9.0
2004-04-01	9.0
2004-07-01	8.8
2004-10-01	8.7
2005-01-01	8.6
2005-04-01	8.4
2005-07-01	8.2
2005-10-01	8.1
2006-01-01	8.0
2006-04-01	7.8
2006-07-01	7.7
2006-10-01	7.4
2007-01-01	7.1
2007-04-01	7.0
2007-07-01	6.9
2007-10-01	6.6
2008-01-01	6.3
2008-04-01	6.3
2008-07-01	6.4
2008-10-01	6.7
2009-01-01	7.3
2009-04-01	8.1
2009-07-01	8.5
2009-10-01	8.7
2010-01-01	8.7
2010-04-01	8.5
2010-07-01	8.3
2010-10-01	8.1
2011-01-01	8.0
2011-04-01	7.8
2011-07-01	7.7
2011-10-01	7.6
2012-01-01	7.6