Quarter	Percentage of GDP
1999-10-01	106.0
2000-01-01	90.8
2000-04-01	79.9
2000-07-01	71.0
2000-10-01	63.9
2001-01-01	60.1
2001-04-01	56.6
2001-07-01	53.5
2001-10-01	50.8
2002-01-01	49.0
2002-04-01	47.1
2002-07-01	45.1
2002-10-01	43.0
2003-01-01	39.8
2003-04-01	37.1
2003-07-01	34.7
2003-10-01	32.4
2004-01-01	30.3
2004-04-01	28.1
2004-07-01	26.0
2004-10-01	23.8
2005-01-01	22.4
2005-04-01	21.1
2005-07-01	17.3
2005-10-01	15.3
2006-01-01	14.0
2006-04-01	13.0
2006-07-01	10.3
2006-10-01	10.1
2007-01-01	9.8
2007-04-01	9.4
2007-07-01	9.0
2007-10-01	8.3
2008-01-01	7.8
2008-04-01	7.3
2008-07-01	7.1
2008-10-01	7.7
2009-01-01	8.2
2009-04-01	8.2
2009-07-01	9.2
2009-10-01	10.2
2010-01-01	9.9
2010-04-01	10.1
2010-07-01	10.3
2010-10-01	10.9
2011-01-01	10.8
2011-04-01	10.7
2011-07-01	11.2
2011-10-01	11.2
2012-01-01	10.7
2012-04-01	11.0
2012-07-01	10.6
2012-10-01	11.9
2013-01-01	11.3
2013-04-01	11.5
2013-07-01	11.9
2013-10-01	13.1
2014-01-01	13.1
2014-04-01	12.7
2014-07-01	12.7
2014-10-01	16.1
2015-01-01	15.6
2015-04-01	15.2
2015-07-01	15.5
2015-10-01	16.3
2016-01-01	15.8
2016-04-01	15.7
2016-07-01	15.6
2016-10-01	16.1
2017-01-01	15.7
2017-04-01	15.8
2017-07-01	15.9
2017-10-01	15.5
2018-01-01	15.2