Quarter	Percent, Seasonally Adjusted
1971-01-01	2.9
1971-04-01	3.3
1971-07-01	3.5
1971-10-01	3.8
1972-01-01	3.9
1972-04-01	3.8
1972-07-01	3.6
1972-10-01	3.4
1973-01-01	3.0
1973-04-01	2.8
1973-07-01	2.6
1973-10-01	2.3
1974-01-01	2.4
1974-04-01	2.5
1974-07-01	2.6
1974-10-01	2.7
1975-01-01	3.2
1975-04-01	3.8
1975-07-01	4.3
1975-10-01	4.9
1976-01-01	5.2
1976-04-01	5.4
1976-07-01	5.5
1976-10-01	5.5
1977-01-01	5.6
1977-04-01	5.7
1977-07-01	5.9
1977-10-01	6.0
1978-01-01	5.9
1978-04-01	5.8
1978-07-01	5.7
1978-10-01	5.4
1979-01-01	4.9
1979-04-01	4.8
1979-07-01	4.7
1979-10-01	4.6
1980-01-01	4.7
1980-04-01	5.2
1980-07-01	6.3
1980-10-01	7.1
1981-01-01	7.9
1981-04-01	8.6
1981-07-01	8.9
1981-10-01	9.6
1982-01-01	9.8
1982-04-01	9.9
1982-07-01	10.1
1982-10-01	10.5
1983-01-01	10.8
1983-04-01	11.0
1983-07-01	10.9
1983-10-01	10.8
1984-01-01	10.7
1984-04-01	10.7
1984-07-01	10.9
1984-10-01	11.1
1985-01-01	11.2
1985-04-01	11.3
1985-07-01	11.2
1985-10-01	11.2
1986-01-01	11.2
1986-04-01	11.3
1986-07-01	11.3
1986-10-01	11.2
1987-01-01	11.0
1987-04-01	10.6
1987-07-01	10.1
1987-10-01	9.6
1988-01-01	9.1
1988-04-01	8.7
1988-07-01	8.4
1988-10-01	7.9
1989-01-01	7.5
1989-04-01	7.1
1989-07-01	7.0
1989-10-01	6.8
1990-01-01	6.8
1990-04-01	6.7
1990-07-01	6.8
1990-10-01	7.2
1991-01-01	7.8
1991-04-01	8.5
1991-07-01	8.9
1991-10-01	9.1
1992-01-01	9.3
1992-04-01	9.7
1992-07-01	9.8
1992-10-01	10.2
1993-01-01	10.4
1993-04-01	10.2
1993-07-01	10.1
1993-10-01	10.1
1994-01-01	9.8
1994-04-01	9.5
1994-07-01	9.2
1994-10-01	8.8
1995-01-01	8.7
1995-04-01	8.5
1995-07-01	8.4
1995-10-01	8.3
1996-01-01	8.1
1996-04-01	8.1
1996-07-01	7.9
1996-10-01	7.6
1997-01-01	7.2
1997-04-01	7.0
1997-07-01	6.7
1997-10-01	6.4
1998-01-01	6.2
1998-04-01	6.1
1998-07-01	6.1
1998-10-01	6.0
1999-01-01	6.0
1999-04-01	6.0
1999-07-01	5.8
1999-10-01	5.8
2000-01-01	5.7
2000-04-01	5.5
2000-07-01	5.3
2000-10-01	5.1
2001-01-01	5.0
2001-04-01	4.9
2001-07-01	5.0
2001-10-01	5.1
2002-01-01	5.1
2002-04-01	5.2
2002-07-01	5.2
2002-10-01	5.1
2003-01-01	5.1
2003-04-01	5.0
2003-07-01	5.0
2003-10-01	4.9
2004-01-01	4.7
2004-04-01	4.7
2004-07-01	4.6
2004-10-01	4.7
2005-01-01	4.7
2005-04-01	4.7
2005-07-01	4.7
2005-10-01	5.1
2006-01-01	5.2
2006-04-01	5.4
2006-07-01	5.5
2006-10-01	5.4
2007-01-01	5.5
2007-04-01	5.3
2007-07-01	5.3
2007-10-01	5.1
2008-01-01	5.1
2008-04-01	5.3
2008-07-01	5.8
2008-10-01	6.3
2009-01-01	7.1
2009-04-01	7.7
2009-07-01	7.8
2009-10-01	7.7
2010-01-01	7.9
2010-04-01	7.8
2010-07-01	7.7
2010-10-01	7.7
2011-01-01	7.7
2011-04-01	7.9
2011-07-01	8.2
2011-10-01	8.3