Quarter	Percentage of GDP
1998-10-01	60.5
1999-01-01	62.4
1999-04-01	61.6
1999-07-01	60.7
1999-10-01	60.6
2000-01-01	60.5
2000-04-01	59.9
2000-07-01	59.9
2000-10-01	59.5
2001-01-01	58.8
2001-04-01	57.7
2001-07-01	58.3
2001-10-01	58.7
2002-01-01	58.7
2002-04-01	58.9
2002-07-01	60.6
2002-10-01	60.9
2003-01-01	62.9
2003-04-01	64.2
2003-07-01	64.0
2003-10-01	64.3
2004-01-01	66.7
2004-04-01	65.9
2004-07-01	67.0
2004-10-01	67.6
2005-01-01	68.4
2005-04-01	70.2
2005-07-01	70.8
2005-10-01	70.0
2006-01-01	69.5
2006-04-01	68.5
2006-07-01	69.0
2006-10-01	68.0
2007-01-01	66.7
2007-04-01	65.3
2007-07-01	64.3
2007-10-01	63.9
2008-01-01	64.7
2008-04-01	64.3
2008-07-01	64.6
2008-10-01	68.0
2009-01-01	70.1
2009-04-01	72.7
2009-07-01	74.4
2009-10-01	75.3
2010-01-01	75.9
2010-04-01	78.1
2010-07-01	78.9
2010-10-01	84.5
2011-01-01	82.2
2011-04-01	82.2
2011-07-01	84.9
2011-10-01	84.2
2012-01-01	85.2
2012-04-01	87.9
2012-07-01	86.6
2012-10-01	86.7
2013-01-01	85.8
2013-04-01	84.4
2013-07-01	81.9
2013-10-01	81.8
2014-01-01	81.3
2014-04-01	81.4
2014-07-01	81.7
2014-10-01	81.9
2015-01-01	83.2
2015-04-01	78.8
2015-07-01	78.4
2015-10-01	77.7
2016-01-01	78.4
2016-04-01	78.4
2016-07-01	77.7
2016-10-01	74.8
2017-01-01	72.9
2017-04-01	72.1
2017-07-01	70.7
2017-10-01	69.4
2018-01-01	67.4