Quarterly Percent
1976-06-30 -8
1976-09-30 -5.2
1976-12-31 4.7
1977-03-31 2.1
1977-06-30 5
1977-09-30 8.2
1977-12-31 11.8
1978-03-31 18.4
1978-06-30 22.5
1978-09-30 23.2
1978-12-31 23
1979-03-31 24.7
1979-06-30 26.3
1979-09-30 29.3
1979-12-31 26.7
1980-03-31 22.5
1980-06-30 18.7
1980-09-30 19.1
1980-12-31 19.9
1981-03-31 23.9
1981-06-30 25.2
1981-09-30 28.1
1981-12-31 30.4
1982-03-31 28.1
1982-06-30 24.6
1982-09-30 22.9
1982-12-31 23
1983-03-31 22.5
1983-06-30 23.4
1983-09-30 22
1983-12-31 20.3
1984-03-31 19.4
1984-06-30 19.7
1984-09-30 18.2
1984-12-31 15.7
1985-03-31 17.2
1985-06-30 14.9
1985-09-30 15.2
1985-12-31 15.1
1986-03-31 14.6
1986-06-30 15.6
1986-09-30 16.3
1986-12-31 15.8
1987-03-31 17.3
1987-06-30 19.1
1987-09-30 19.8
1987-12-31 22.9
1988-03-31 25.1
1988-06-30 24.7
1988-09-30 25.9
1988-12-31 23.7
1989-03-31 23.3
1989-06-30 22.5
1989-09-30 19.7
1989-12-31 19.4
1990-03-31 14.6
1990-06-30 11.4
1990-09-30 8.6
1990-12-31 6.7
1991-03-31 6.9
1991-06-30 5.3
1991-09-30 5.3
1991-12-31 4.9
1992-03-31 3.6
1992-06-30 2
1992-09-30 2.5
1992-12-31 1.7
1993-03-31 1.4
1993-06-30 0.4
1993-09-30 2
1993-12-31 0.3
1994-03-31 1.9
1994-06-30 3.8
1994-09-30 5.2
1994-12-31 7.3
1995-03-31 9
1995-06-30 9.1
1995-09-30 10.1
1995-12-31 11.7
1996-03-31 12.1
1996-06-30 13.2
1996-09-30 15.2
1996-12-31 15.1
1997-03-31 15.7
1997-06-30 17.7
1997-09-30 14.6
1997-12-31 14.9
1998-03-31 15.8
1998-06-30 14.5
1998-09-30 16.3
1998-12-31 16.8
1999-03-31 16
1999-06-30 15.3
1999-09-30 14.5
1999-12-31 14.1
2000-03-31 14.8
2000-06-30 14.3
2000-09-30 13.7
2000-12-31 14.5
2001-03-31 13.7
2001-06-30 15.1
2001-09-30 16.2
2001-12-31 16.9
2002-03-31 17.6
2002-06-30 17
2002-09-30 17.6
2002-12-31 16.8
2003-03-31 15
2003-06-30 14
2003-09-30 12.3
2003-12-31 11.7
2004-03-31 12.6
2004-06-30 12.8
2004-09-30 13
2004-12-31 13
2005-03-31 12
2005-06-30 11.6
2005-09-30 10.6
2005-12-31 10.2
2006-03-31 9.4
2006-06-30 8.5
2006-09-30 7.6
2006-12-31 6.4
2007-03-31 4.6
2007-06-30 3.9
2007-09-30 3.9
2007-12-31 3.5
2008-03-31 4.3
2008-06-30 3.4
2008-09-30 1.6
2008-12-31 0.6
2009-03-31 -2
2009-06-30 -3.9
2009-09-30 -4.9
2009-12-31 -3.5
2010-03-31 -3.2
2010-06-30 -2.7
2010-09-30 -2.7
2010-12-31 -3.6
2011-03-31 -3.1
2011-06-30 -2.4
2011-09-30 -2
2011-12-31 -3.3
2012-03-31 -3.8
2012-06-30 -4.4
2012-09-30 -3.9
2012-12-31 -2.6
2013-03-31 -0.8
2013-06-30 0.3
2013-09-30 3.2
2013-12-31 3.2
2014-03-31 4.2
2014-06-30 5.8
2014-09-30 5.8
2014-12-31 6.6
2015-03-31 7.5