Quarter	Percentage of GDP
1996-01-01	68.4
1996-04-01	66.1
1996-07-01	66.8
1996-10-01	70.2
1997-01-01	66.7
1997-04-01	67.6
1997-07-01	65.8
1997-10-01	67.8
1998-01-01	66.6
1998-04-01	65.5
1998-07-01	66.3
1998-10-01	66.8
1999-01-01	63.6
1999-04-01	63.4
1999-07-01	61.6
1999-10-01	61.6
2000-01-01	58.0
2000-04-01	52.9
2000-07-01	51.2
2000-10-01	50.8
2001-01-01	53.1
2001-04-01	51.6
2001-07-01	51.9
2001-10-01	52.3
2002-01-01	49.0
2002-04-01	47.8
2002-07-01	49.4
2002-10-01	50.3
2003-01-01	50.6
2003-04-01	49.6
2003-07-01	49.1
2003-10-01	49.7
2004-01-01	50.3
2004-04-01	48.6
2004-07-01	47.7
2004-10-01	49.0
2005-01-01	48.6
2005-04-01	47.4
2005-07-01	47.5
2005-10-01	49.3
2006-01-01	45.8
2006-04-01	44.6
2006-07-01	44.5
2006-10-01	44.0
2007-01-01	42.1
2007-04-01	40.2
2007-07-01	39.4
2007-10-01	39.2
2008-01-01	36.7
2008-04-01	35.0
2008-07-01	37.1
2008-10-01	37.8
2009-01-01	35.2
2009-04-01	37.3
2009-07-01	38.8
2009-10-01	41.4
2010-01-01	39.2
2010-04-01	38.6
2010-07-01	37.6
2010-10-01	38.7
2011-01-01	36.4
2011-04-01	36.7
2011-07-01	35.9
2011-10-01	37.9
2012-01-01	37.1
2012-04-01	37.3
2012-07-01	37.4
2012-10-01	38.1
2013-01-01	40.6
2013-04-01	41.3
2013-07-01	41.2
2013-10-01	40.7
2014-01-01	40.9
2014-04-01	41.9
2014-07-01	42.3
2014-10-01	45.5
2015-01-01	44.8
2015-04-01	44.8
2015-07-01	44.0
2015-10-01	44.2
2016-01-01	42.3
2016-04-01	43.2
2016-07-01	41.8
2016-10-01	42.2
2017-01-01	41.7
2017-04-01	41.0
2017-07-01	39.4
2017-10-01	40.5
2018-01-01	37.9