Quarterly Percent
1987-09-30 18.1
1987-12-31 16.1
1988-03-31 17.2
1988-06-30 18.3
1988-09-30 20.2
1988-12-31 19.8
1989-03-31 18.7
1989-06-30 17.1
1989-09-30 14.5
1989-12-31 14
1990-03-31 16.2
1990-06-30 15.2
1990-09-30 14.1
1990-12-31 13.2
1991-03-31 9.7
1991-06-30 7.8
1991-09-30 6.8
1991-12-31 5.7
1992-03-31 4.8
1992-06-30 5.1
1992-09-30 4.6
1992-12-31 4
1993-03-31 3.3
1993-06-30 2.9
1993-09-30 2.8
1993-12-31 2.7
1994-03-31 3
1994-06-30 3
1994-09-30 3.3
1994-12-31 4.3
1995-03-31 5.7
1995-06-30 6.4
1995-09-30 6.8
1995-12-31 7.6
1996-03-31 7.5
1996-06-30 8.1
1996-09-30 8.2
1996-12-31 7.9
1997-03-31 7
1997-06-30 6.9
1997-09-30 6.3
1997-12-31 5.8
1998-03-31 6.3
1998-06-30 6.1
1998-09-30 6.7
1998-12-31 7
1999-03-31 6.9
1999-06-30 6.9
1999-09-30 7.2
1999-12-31 7.8
2000-03-31 9
2000-06-30 10.2
2000-09-30 10.5
2000-12-31 9.1
2001-03-31 8.4
2001-06-30 7.9
2001-09-30 7.7
2001-12-31 8.6
2002-03-31 8.5
2002-06-30 8.4
2002-09-30 9.3
2002-12-31 10.7
2003-03-31 10.3
2003-06-30 11.1
2003-09-30 10.7
2003-12-31 10.4
2004-03-31 10.8
2004-06-30 10.4
2004-09-30 10.6
2004-12-31 9.6
2005-03-31 9.4
2005-06-30 9.7
2005-09-30 9.6
2005-12-31 9.7
2006-03-31 9.1
2006-06-30 9.4
2006-09-30 10
2006-12-31 10
2007-03-31 10.7
2007-06-30 9.2
2007-09-30 8.5
2007-12-31 7.5
2008-03-31 7.9
2008-06-30 7.4
2008-09-30 3.3
2008-12-31 -1.3
2009-03-31 -2.8
2009-06-30 -4.1
2009-09-30 -3
2009-12-31 1.2
2010-03-31 0.5
2010-06-30 0.4
2010-09-30 0.5
2010-12-31 -0.2
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 0.8
2014-03-31 0.9
2014-06-30 1.7
2014-09-30 1.8
2014-12-31 1.5
2015-03-31 1.8