Quarterly Percent
1997-09-30 19
1997-12-31 22.5
1998-03-31 16.9
1998-06-30 14
1998-09-30 17.1
1998-12-31 10
1999-03-31 8.5
1999-06-30 10.5
1999-09-30 5.4
1999-12-31 12.3
2000-03-31 14.5
2000-06-30 12.6
2000-09-30 18
2000-12-31 19.4
2001-03-31 17.6
2001-06-30 16.4
2001-09-30 11.4
2001-12-31 4.4
2002-03-31 1.6
2002-06-30 2.7
2002-09-30 5.9
2002-12-31 4.4
2003-03-31 3.9
2003-06-30 4.4
2003-09-30 3.1
2003-12-31 9.6
2004-03-31 12.1
2004-06-30 13.6
2004-09-30 19.1
2004-12-31 18.1
2005-03-31 17.1
2005-06-30 14.1
2005-09-30 13.2
2005-12-31 12.9
2006-03-31 19.2
2006-06-30 30.1
2006-09-30 25.4
2006-12-31 23.3
2007-03-31 21.4
2007-06-30 17.5
2007-09-30 26.6
2007-12-31 28.2
2008-03-31 24.5
2008-06-30 29.7
2008-09-30 34.7
2008-12-31 51.3
2009-03-31 56
2009-06-30 35.4
2009-09-30 22.9
2009-12-31 7.7
2010-03-31 0.7
2010-06-30 3.1
2010-09-30 -2.6
2010-12-31 -7.2
2011-03-31 -7.1
2011-06-30 -4.6
2011-09-30 -2.7
2011-12-31 -4.9
2012-03-31 -12.4
2012-06-30 -17.8
2012-09-30 -17.5
2012-12-31 -8
2013-03-31 -5.5
2013-06-30 -3.1
2013-09-30 0
2013-12-31 -10.9
2014-03-31 -15.2
2014-06-30 -15.7
2014-09-30 -18.9
2014-12-31 -15.7
2015-03-31 -9
2015-06-30 -8
2015-09-30 -6.5
2015-12-31 -5.1
2016-03-31 -1.5
2016-06-30 2.3
2016-09-30 1.4
2016-12-31 4.4
2017-03-31 8.8
2017-06-30 9.8
2017-09-30 12.8
2017-12-31 10.7
2018-03-31 2.4
2018-06-30 0
2018-09-30 -3.1
2018-12-31 -1
2019-03-31 2.4
2019-06-30 1.4
2019-09-30 8.8
2019-12-31 10.6
2020-03-31 14.7
2020-06-30 15.1
2020-09-30 6.8
2020-12-31 4.5
2021-03-31 -5.9
2021-06-30 -2.7
2021-09-30 -3.5
2021-12-31 -0.3
2022-03-31 7
2022-06-30 2.5
2022-09-30 8.2
2022-12-31 -3.2
2023-03-31 -10
2023-06-30 -9.4
2023-09-30 -13.3
2023-12-31 -3.6
