Quarter	Percent, Seasonally adjusted
1964-03-31	15.6
1964-06-30	15.7
1964-09-30	15.9
1964-12-31	17.2
1965-03-31	14.4
1965-06-30	16
1965-09-30	13.2
1965-12-31	10
1966-03-31	12.2
1966-06-30	9.4
1966-09-30	10.1
1966-12-31	8.5
1967-03-31	7.2
1967-06-30	6.7
1967-09-30	8.2
1967-12-31	11
1968-03-31	11.7
1968-06-30	13.9
1968-09-30	11.4
1968-12-31	11.9
1969-03-31	12.6
1969-06-30	10.6
1969-09-30	13.2
1969-12-31	10.5
1970-03-31	10.2
1970-06-30	13.1
1970-09-30	12.1
1970-12-31	12.8
1971-03-31	11.8
1971-06-30	10
1971-09-30	11.6
1971-12-31	14.5
1972-03-31	19.1
1972-06-30	24.4
1972-09-30	26.6
1972-12-31	28.6
1973-03-31	27.1
1973-06-30	23.7
1973-09-30	24.6
1973-12-31	26.7
1974-03-31	24.1
1974-06-30	23.2
1974-09-30	21.4
1974-12-31	15.6
1975-03-31	14.2
1975-06-30	12.3
1975-09-30	8
1975-12-31	8
1976-03-31	6.4
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	4.7
1992-12-31	4.2
1993-03-31	3.4
1993-06-30	2.9
1993-09-30	2.8
1993-12-31	2.7
1994-03-31	3.1
1994-06-30	3.2
1994-09-30	3.6
1994-12-31	4.5
1995-03-31	5.9
1995-06-30	6.6
1995-09-30	6.9
1995-12-31	7.5
1996-03-31	7.4
1996-06-30	8.1
1996-09-30	8.4
1996-12-31	8.2
1997-03-31	7.4
1997-06-30	7.3
1997-09-30	6.5
1997-12-31	5.9
1998-03-31	6.7
1998-06-30	6.4
1998-09-30	6.8
1998-12-31	7.1
1999-03-31	7.1
1999-06-30	7
1999-09-30	7.3
1999-12-31	8.2
2000-03-31	9.5
2000-06-30	10.8
2000-09-30	11.6
2000-12-31	10.3
2001-03-31	9.9
2001-06-30	9.6
2001-09-30	9.2
2001-12-31	10
2002-03-31	9.6
2002-06-30	9.6
2002-09-30	10.4
2002-12-31	12
2003-03-31	12.5
2003-06-30	13.1
2003-09-30	12.7
2003-12-31	12.1
2004-03-31	12.3
2004-06-30	12
2004-09-30	12.4
2004-12-31	11.3
2005-03-31	11.5
2005-06-30	12
2005-09-30	11.5
2005-12-31	11.8
2006-03-31	11.5
2006-06-30	11.5
2006-09-30	12.2
2006-12-31	12.4
2007-03-31	12.3
2007-06-30	11.9
2007-09-30	11.4
2007-12-31	10.8
2008-03-31	10.1
2008-06-30	9.3
2008-09-30	7.1
2008-12-31	5
2009-03-31	3.5
2009-06-30	1.5
2009-09-30	0.5
2009-12-31	0.5
2010-03-31	-0.1
2010-06-30	-0.2
2010-09-30	-0.1
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	-0.5
2012-12-31	-0.3
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	1.7
2014-09-30	1.8
2014-12-31	1.5
2015-03-31	1.8
2015-06-30	1.7
2015-09-30	2.2
2015-12-31	2.8
2016-03-31	3.7
2016-06-30	4
2016-09-30	4
2016-12-31	3.8
2017-03-31	3.6
2017-06-30	3.7
2017-09-30	3.7
2017-12-31	3.7
2018-03-31	3.3
2018-06-30	3.2
2018-09-30	3.2
2018-12-31	3.6
2019-03-31	3.5
2019-06-30	3.5
2019-09-30	3.8
2019-12-31	3.2
2020-03-31	4.3
2020-06-30	4
2020-09-30	3.4
2020-12-31	3.7
2021-03-31	2.9
2021-06-30	3.5
2021-09-30	3.4
2021-12-31	3
2022-03-31	3
2022-06-30	2.6
2022-09-30	3.3
2022-12-31	3.3
2023-03-31	2.2
2023-06-30	1.2
2023-09-30	0.6
2023-12-31	0.2