Quarter	Percentage of GDP
1996-01-01	11.2
1996-04-01	10.7
1996-07-01	10.7
1996-10-01	10.6
1997-01-01	10.8
1997-04-01	11.0
1997-07-01	11.5
1997-10-01	11.4
1998-01-01	11.4
1998-04-01	11.3
1998-07-01	11.5
1998-10-01	11.4
1999-01-01	11.4
1999-04-01	11.3
1999-07-01	11.3
1999-10-01	11.1
2000-01-01	11.1
2000-04-01	12.6
2000-07-01	12.7
2000-10-01	12.6
2001-01-01	12.7
2001-04-01	9.8
2001-07-01	10.0
2001-10-01	10.1
2002-01-01	10.1
2002-04-01	10.1
2002-07-01	9.8
2002-10-01	9.6
2003-01-01	9.2
2003-04-01	9.2
2003-07-01	9.2
2003-10-01	9.2
2004-01-01	9.2
2004-04-01	9.6
2004-07-01	9.9
2004-10-01	10.5
2005-01-01	11.0
2005-04-01	11.2
2005-07-01	11.6
2005-10-01	12.2
2006-01-01	12.2
2006-04-01	12.6
2006-07-01	12.9
2006-10-01	13.5
2007-01-01	13.5
2007-04-01	13.7
2007-07-01	14.6
2007-10-01	15.4
2008-01-01	15.7
2008-04-01	16.1
2008-07-01	16.7
2008-10-01	17.3
2009-01-01	17.1
2009-04-01	17.5
2009-07-01	18.3
2009-10-01	19.0
2010-01-01	19.1
2010-04-01	19.5
2010-07-01	20.6
2010-10-01	21.6
2011-01-01	21.6
2011-04-01	21.8
2011-07-01	22.0
2011-10-01	22.8
2012-01-01	22.8
2012-04-01	23.4
2012-07-01	23.5
2012-10-01	24.1
2013-01-01	24.4
2013-04-01	24.9
2013-07-01	25.3
2013-10-01	25.9
2014-01-01	25.0
2014-04-01	24.6
2014-07-01	24.2
2014-10-01	24.1
2015-01-01	24.8
2015-04-01	25.7
2015-07-01	26.7
2015-10-01	27.6
2016-01-01	27.1
2016-04-01	26.6
2016-07-01	25.9
2016-10-01	25.8
2017-01-01	25.3
2017-04-01	24.6
2017-07-01	25.1
2017-10-01	24.7
2018-01-01	24.6