Quarter	Percentage of GDP
1999-10-01	103.1
2000-01-01	98.0
2000-04-01	93.1
2000-07-01	89.1
2000-10-01	86.7
2001-01-01	87.3
2001-04-01	89.1
2001-07-01	91.4
2001-10-01	93.2
2002-01-01	94.9
2002-04-01	96.1
2002-07-01	96.6
2002-10-01	96.4
2003-01-01	93.2
2003-04-01	89.5
2003-07-01	85.5
2003-10-01	81.6
2004-01-01	76.8
2004-04-01	72.4
2004-07-01	67.8
2004-10-01	63.0
2005-01-01	55.8
2005-04-01	49.2
2005-07-01	42.8
2005-10-01	37.4
2006-01-01	33.5
2006-04-01	30.2
2006-07-01	27.6
2006-10-01	25.8
2007-01-01	24.2
2007-04-01	22.3
2007-07-01	20.1
2007-10-01	17.1
2008-01-01	15.2
2008-04-01	13.3
2008-07-01	12.0
2008-10-01	12.1
2009-01-01	12.9
2009-04-01	14.1
2009-07-01	14.9
2009-10-01	14.0
2010-01-01	12.1
2010-04-01	10.7
2010-07-01	9.6
2010-10-01	8.4
2011-01-01	7.6
2011-04-01	6.7
2011-07-01	6.0
2011-10-01	5.4
2012-01-01	4.7
2012-04-01	4.1
2012-07-01	3.5
2012-10-01	3.0
2013-01-01	2.8
2013-04-01	2.6
2013-07-01	2.4
2013-10-01	2.1
2014-01-01	2.0
2014-04-01	1.8
2014-07-01	1.7
2014-10-01	1.6
2015-01-01	2.5
2015-04-01	3.5
2015-07-01	4.7
2015-10-01	5.8
2016-01-01	7.8
2016-04-01	9.7
2016-07-01	11.5
2016-10-01	13.0
2017-01-01	14.0
2017-04-01	15.1
2017-07-01	16.1
2017-10-01	17.1
2018-01-01	17.8