Quarterly Percent
1987-12-31 34.8
1988-03-31 39.2
1988-06-30 40.3
1988-09-30 37.9
1988-12-31 36.8
1989-03-31 31.5
1989-06-30 29.7
1989-09-30 26
1989-12-31 20.2
1990-03-31 20
1990-06-30 23.4
1990-09-30 20.9
1990-12-31 18.9
1991-03-31 16.2
1991-06-30 11.9
1991-09-30 4.6
1991-12-31 1.3
1992-03-31 -6
1992-06-30 -7
1992-09-30 -5.8
1992-12-31 -7.3
1993-03-31 -1.5
1993-06-30 -4.9
1993-09-30 -5
1993-12-31 0.5
1994-03-31 -4.1
1994-06-30 3.2
1994-09-30 1.1
1994-12-31 3.6
1995-03-31 3.8
1995-06-30 0.5
1995-09-30 7.3
1995-12-31 5.9
1996-03-31 3.6
1996-06-30 5
1996-09-30 4.5
1996-12-31 6.3
1997-03-31 16.9
1997-06-30 11.4
1997-09-30 7
1997-12-31 6.3
1998-03-31 6.3
1998-06-30 7.7
1998-09-30 12.9
1998-12-31 4.7
1999-03-31 2.6
1999-06-30 4.4
1999-09-30 0.9
1999-12-31 7.5
2000-03-31 5.1
2000-06-30 5.9
2000-09-30 14.7
2000-12-31 15.8
2001-03-31 20.4
2001-06-30 21.6
2001-09-30 11.5
2001-12-31 6.1
2002-03-31 3.6
2002-06-30 4
2002-09-30 10.6
2002-12-31 16.1
2003-03-31 17.3
2003-06-30 16.1
2003-09-30 9.8
2003-12-31 10.7
2004-03-31 3.9
2004-06-30 10.4
2004-09-30 15.9
2004-12-31 14.6
2005-03-31 14.1
2005-06-30 10.6
2005-09-30 7.9
2005-12-31 6.9
2006-03-31 18.6
2006-06-30 21.2
2006-09-30 23.8
2006-12-31 25.1
2007-03-31 33.5
2007-06-30 27.4
2007-09-30 34.3
2007-12-31 26.4
2008-03-31 17
2008-06-30 25
2008-09-30 27.7
2008-12-31 39.8
2009-03-31 40.2
2009-06-30 29.7
2009-09-30 17.5
2009-12-31 6.5
2010-03-31 -6.3
2010-06-30 -7.5
2010-09-30 -4.7
2010-12-31 -1.1
2011-03-31 3.3
2011-06-30 3
2011-09-30 -7.2
2011-12-31 -14.6
2012-03-31 -12.1
2012-06-30 -13.4
2012-09-30 -8.2
2012-12-31 3.4
2013-03-31 0.9
2013-06-30 2.7
2013-09-30 1.6
2013-12-31 -10.1
2014-03-31 -23.8
2014-06-30 -35.5
2014-09-30 -36
2014-12-31 -34.1
2015-03-31 -15.9
2015-06-30 -2.4
2015-09-30 0
2015-12-31 2
2016-03-31 -5.7
2016-06-30 -10.6
2016-09-30 -13
2016-12-31 -15.5
2017-03-31 -15.1
2017-06-30 -7.1
2017-09-30 -5.7
2017-12-31 2
2018-03-31 13.4
2018-06-30 19
2018-09-30 19.2
2018-12-31 15.7
2019-03-31 15.4
2019-06-30 12.2
2019-09-30 10.6
2019-12-31 13.3
2020-03-31 5.5
2020-06-30 -1.7
2020-09-30 -1.9
2020-12-31 -1
2021-03-31 -2.8
2021-06-30 3.5
2021-09-30 5.8
2021-12-31 -1
2022-03-31 7.7
2022-06-30 6.6
2022-09-30 7.3
2022-12-31 10.4
2023-03-31 4.3
2023-06-30 4.8
2023-09-30 3.2
2023-12-31 6.2