Quarter	Percent, Seasonally adjusted
1964-03-31	13.2
1964-06-30	13.3
1964-09-30	14.3
1964-12-31	15.7
1965-03-31	14.1
1965-06-30	13.2
1965-09-30	10.6
1965-12-31	8.1
1966-03-31	8.9
1966-06-30	8.3
1966-09-30	8.4
1966-12-31	6.7
1967-03-31	5.3
1967-06-30	5.1
1967-09-30	7.5
1967-12-31	10.6
1968-03-31	11.7
1968-06-30	13.6
1968-09-30	11.3
1968-12-31	10.6
1969-03-31	10.4
1969-06-30	8.4
1969-09-30	9.7
1969-12-31	8.7
1970-03-31	8.8
1970-06-30	12.1
1970-09-30	11.8
1970-12-31	11.7
1971-03-31	11.4
1971-06-30	9.7
1971-09-30	12.2
1971-12-31	16.2
1972-03-31	22.4
1972-06-30	29.3
1972-09-30	30.8
1972-12-31	33.6
1973-03-31	30.9
1973-06-30	26
1973-09-30	26.7
1973-12-31	25.6
1974-03-31	21.8
1974-06-30	20.4
1974-09-30	17.7
1974-12-31	13.2
1975-03-31	11.4
1975-06-30	9
1975-09-30	6
1975-12-31	6.2
1976-03-31	6
1976-06-30	9.6
1976-09-30	13.7
1976-12-31	15.9
1977-03-31	16
1977-06-30	15.2
1977-09-30	15
1977-12-31	14.5
1978-03-31	15.8
1978-06-30	16.7
1978-09-30	16.1
1978-12-31	15.9
1979-03-31	18
1979-06-30	18.1
1979-09-30	19
1979-12-31	18.6
1980-03-31	18.7
1980-06-30	18
1980-09-30	18.9
1980-12-31	18.8
1981-03-31	17.2
1981-06-30	15
1981-09-30	15.2
1981-12-31	17.6
1982-03-31	20.4
1982-06-30	22.6
1982-09-30	24.1
1982-12-31	21.7
1983-03-31	18.7
1983-06-30	17.8
1983-09-30	15.5
1983-12-31	15.4
1984-03-31	16.5
1984-06-30	16.8
1984-09-30	17.4
1984-12-31	17.9
1985-03-31	17.9
1985-06-30	17.5
1985-09-30	16.9
1985-12-31	16.5
1986-03-31	16.2
1986-06-30	16.5
1986-09-30	16.6
1986-12-31	18
1987-03-31	16.9
1987-06-30	16.9
1987-09-30	18
1987-12-31	17.7
1988-03-31	20.5
1988-06-30	23
1988-09-30	24.5
1988-12-31	24.4
1989-03-31	23.7
1989-06-30	22
1989-09-30	21.5
1989-12-31	20.6
1990-03-31	19.7
1990-06-30	17.9
1990-09-30	14.8
1990-12-31	13.1
1991-03-31	10.8
1991-06-30	8.6
1991-09-30	7.4
1991-12-31	6.1
1992-03-31	5.1
1992-06-30	5.2
1992-09-30	4.8
1992-12-31	4.2
1993-03-31	3.4
1993-06-30	2.9
1993-09-30	2.7
1993-12-31	2.5
1994-03-31	2.9
1994-06-30	2.9
1994-09-30	3.2
1994-12-31	4.2
1995-03-31	5.6
1995-06-30	6.4
1995-09-30	6.8
1995-12-31	7.4
1996-03-31	7.4
1996-06-30	8
1996-09-30	8.1
1996-12-31	7.9
1997-03-31	7.1
1997-06-30	6.9
1997-09-30	6.2
1997-12-31	5.8
1998-03-31	6.4
1998-06-30	6.1
1998-09-30	6.7
1998-12-31	7.1
1999-03-31	6.9
1999-06-30	6.9
1999-09-30	7.2
1999-12-31	7.7
2000-03-31	9
2000-06-30	10.1
2000-09-30	10.4
2000-12-31	9.1
2001-03-31	8.4
2001-06-30	7.9
2001-09-30	7.6
2001-12-31	8.6
2002-03-31	8.5
2002-06-30	8.4
2002-09-30	9.4
2002-12-31	10.6
2003-03-31	10.5
2003-06-30	11.1
2003-09-30	10.6
2003-12-31	10.3
2004-03-31	10.8
2004-06-30	10.3
2004-09-30	10.5
2004-12-31	9.6
2005-03-31	9.3
2005-06-30	9.7
2005-09-30	9.4
2005-12-31	9.9
2006-03-31	9
2006-06-30	9.3
2006-09-30	10.1
2006-12-31	10.1
2007-03-31	10.6
2007-06-30	9.2
2007-09-30	8.5
2007-12-31	7.7
2008-03-31	7.8
2008-06-30	7.4
2008-09-30	3.5
2008-12-31	-1.3
2009-03-31	-2.8
2009-06-30	-4.1
2009-09-30	-2.9
2009-12-31	1.2
2010-03-31	0.9
2010-06-30	0.8
2010-09-30	0.9
2010-12-31	-0.3
2011-03-31	-0.1
2011-06-30	0.2
2011-09-30	0.1
2011-12-31	-0.2
2012-03-31	-0.2
2012-06-30	-0.5
2012-09-30	-0.4
2012-12-31	-0.2
2013-03-31	-0.2
2013-06-30	-0.3
2013-09-30	0.3
2013-12-31	0.9
2014-03-31	1
2014-06-30	1.8
2014-09-30	1.8
2014-12-31	1.5
2015-03-31	1.8