Quarter	Percentage of GDP
2001-10-01	98.5
2002-01-01	93.9
2002-04-01	90.9
2002-07-01	89.2
2002-10-01	87.4
2003-01-01	85.1
2003-04-01	82.8
2003-07-01	82.1
2003-10-01	81.8
2004-01-01	80.7
2004-04-01	82.3
2004-07-01	81.0
2004-10-01	80.0
2005-01-01	78.3
2005-04-01	77.1
2005-07-01	75.7
2005-10-01	71.5
2006-01-01	66.9
2006-04-01	65.0
2006-07-01	62.8
2006-10-01	61.9
2007-01-01	60.2
2007-04-01	58.4
2007-07-01	58.2
2007-10-01	59.1
2008-01-01	58.8
2008-04-01	59.0
2008-07-01	58.7
2008-10-01	58.3
2009-01-01	55.8
2009-04-01	53.9
2009-07-01	52.9
2009-10-01	52.6
2010-01-01	49.9
2010-04-01	50.9
2010-07-01	50.7
2010-10-01	51.5
2011-01-01	50.4
2011-04-01	51.2
2011-07-01	52.9
2011-10-01	53.3
2012-01-01	54.0
2012-04-01	55.8
2012-07-01	56.5
2012-10-01	57.5
2013-01-01	57.1
2013-04-01	58.8
2013-07-01	62.1
2013-10-01	63.6
2014-01-01	62.1
2014-04-01	63.3
2014-07-01	64.2
2014-10-01	64.2
2015-01-01	65.0
2015-04-01	65.9
2015-07-01	67.6
2015-10-01	68.1
2016-01-01	67.1
2016-04-01	68.1
2016-07-01	68.2
2016-10-01	68.8
2017-01-01	68.1
2017-04-01	68.1
2017-07-01	68.0
2017-10-01	68.5
2018-01-01	68.3