Quarterly Percent
1987-12-31 45.3
1988-03-31 42.2
1988-06-30 11.6
1988-09-30 14.3
1988-12-31 -1.2
1989-03-31 7.1
1989-06-30 33.6
1989-09-30 22.1
1989-12-31 32.8
1990-03-31 30.8
1990-06-30 24.4
1990-09-30 17
1990-12-31 4.1
1991-03-31 -10.8
1991-06-30 -28.4
1991-09-30 -20.7
1991-12-31 -17.2
1992-03-31 -20.7
1992-06-30 -9.6
1992-09-30 -4.7
1992-12-31 -24.5
1993-03-31 -18.7
1993-06-30 -21.4
1993-09-30 -29.3
1993-12-31 14.6
1994-03-31 55.8
1994-06-30 65.9
1994-09-30 91.8
1994-12-31 38.6
1995-03-31 7
1995-06-30 -1.6
1995-09-30 -3
1995-12-31 10.3
1996-03-31 17.1
1996-06-30 -0.7
1996-09-30 9.3
1996-12-31 11.6
1997-03-31 11.8
1997-06-30 51.5
1997-09-30 86
1997-12-31 79
1998-03-31 95.2
1998-06-30 163.7
1998-09-30 14.3
1998-12-31 24.1
1999-03-31 4.6
1999-06-30 9.6
1999-09-30 11.7
1999-12-31 6.5
2000-03-31 6.5
2000-06-30 3
2000-09-30 26.7
2000-12-31 15.4
2001-03-31 13
2001-06-30 0
2001-09-30 -5.2
2001-12-31 -19.5
2002-03-31 -21.4
2002-06-30 -23.5
2002-09-30 -10.5
2002-12-31 -0.3
2003-03-31 9.2
2003-06-30 22.3
2003-09-30 18.5
2003-12-31 30.5
2004-03-31 25.1
2004-06-30 36.3
2004-09-30 35.1
2004-12-31 14.1
2005-03-31 19.2
2005-06-30 10.4
2005-09-30 -15.3
2005-12-31 14.3
2006-03-31 -14.4
2006-06-30 -11.5
2006-09-30 7.3
2006-12-31 12.9
2007-03-31 37.4
2007-06-30 30.1
2007-09-30 32
2007-12-31 14.4
2008-03-31 13.3
2008-06-30 8
2008-09-30 -1.4
2008-12-31 -8.6
2009-03-31 -5.5
2009-06-30 -12.3
2009-09-30 -14.1
2009-12-31 -16.6
2010-03-31 -18
2010-06-30 -5
2010-09-30 -8.8
2010-12-31 -6.5
2011-03-31 -2.3
2011-06-30 2.4
2011-09-30 20
2011-12-31 27
2012-03-31 19
2012-06-30 16.1
2012-09-30 -2.7
2012-12-31 -7.3
2013-03-31 17.9
2013-06-30 7.3
2013-09-30 -0.3
2013-12-31 -10.9
2014-03-31 -40.2
2014-06-30 -44.9
2014-09-30 -25.8
2014-12-31 -19.9
2015-03-31 16.3
2015-06-30 10.3
2015-09-30 -14.5
2015-12-31 -12.9
2016-03-31 -4.5
2016-06-30 30
2016-09-30 62.5
2016-12-31 69.2
2017-03-31 40.4
2017-06-30 26.9
2017-09-30 7.6
2017-12-31 1.1
2018-03-31 -2
2018-06-30 3.1
2018-09-30 10.2
2018-12-31 15.9
2019-03-31 17.5
2019-06-30 9.8
2019-09-30 24.9
2019-12-31 9.9
2020-03-31 24.7
2020-06-30 24
2020-09-30 -2.5
2020-12-31 10.9
2021-03-31 -19.3
2021-06-30 -18.8
2021-09-30 -7.5
2021-12-31 -16.6
2022-03-31 4.2
2022-06-30 4.9
2022-09-30 20.7
2022-12-31 2.6
2023-03-31 -13.8
2023-06-30 -11.3
2023-09-30 -25.7
2023-12-31 -15.5