Quarter	Percentage of GDP
1998-01-01	0.8
1998-04-01	0.8
1998-07-01	1.0
1998-10-01	0.8
1999-01-01	0.8
1999-04-01	0.7
1999-07-01	0.7
1999-10-01	0.6
2000-01-01	0.6
2000-04-01	0.6
2000-07-01	0.6
2000-10-01	0.6
2001-01-01	0.8
2001-04-01	0.9
2001-07-01	1.0
2001-10-01	1.0
2002-01-01	1.1
2002-04-01	1.2
2002-07-01	1.3
2002-10-01	1.3
2003-01-01	1.3
2003-04-01	1.7
2003-07-01	2.0
2003-10-01	2.3
2004-01-01	2.6
2004-04-01	3.1
2004-07-01	3.4
2004-10-01	3.9
2005-01-01	3.9
2005-04-01	4.5
2005-07-01	5.2
2005-10-01	6.0
2006-01-01	6.1
2006-04-01	6.8
2006-07-01	7.3
2006-10-01	8.2
2007-01-01	8.4
2007-04-01	9.6
2007-07-01	10.3
2007-10-01	10.5
2008-01-01	10.6
2008-04-01	11.0
2008-07-01	11.5
2008-10-01	11.5
2009-01-01	11.6
2009-04-01	10.9
2009-07-01	11.1
2009-10-01	11.1
2010-01-01	10.4
2010-04-01	10.3
2010-07-01	10.4
2010-10-01	10.4
2011-01-01	10.0
2011-04-01	10.2
2011-07-01	10.9
2011-10-01	11.4
2012-01-01	11.4
2012-04-01	12.5
2012-07-01	13.0
2012-10-01	13.7
2013-01-01	14.2
2013-04-01	15.2
2013-07-01	16.0
2013-10-01	16.5
2014-01-01	16.8
2014-04-01	16.9
2014-07-01	17.3
2014-10-01	17.7
2015-01-01	16.4
2015-04-01	15.8
2015-07-01	15.5
2015-10-01	15.9
2016-01-01	15.4
2016-04-01	15.3
2016-07-01	15.4
2016-10-01	15.3
2017-01-01	15.2
2017-04-01	15.4
2017-07-01	15.8
2017-10-01	16.2
2018-01-01	16.5