Quarter	Percentage of GDP
1997-07-01	63.3
1997-10-01	64.3
1998-01-01	63.4
1998-04-01	64.4
1998-07-01	65.0
1998-10-01	65.7
1999-01-01	65.0
1999-04-01	65.0
1999-07-01	65.1
1999-10-01	65.6
2000-01-01	65.3
2000-04-01	65.1
2000-07-01	65.3
2000-10-01	65.8
2001-01-01	65.2
2001-04-01	65.2
2001-07-01	65.4
2001-10-01	65.7
2002-01-01	66.2
2002-04-01	66.5
2002-07-01	67.0
2002-10-01	67.5
2003-01-01	67.6
2003-04-01	68.4
2003-07-01	68.7
2003-10-01	68.8
2004-01-01	68.7
2004-04-01	68.7
2004-07-01	68.7
2004-10-01	69.1
2005-01-01	69.1
2005-04-01	69.5
2005-07-01	70.1
2005-10-01	70.4
2006-01-01	71.2
2006-04-01	71.9
2006-07-01	72.4
2006-10-01	72.8
2007-01-01	72.9
2007-04-01	73.8
2007-07-01	74.9
2007-10-01	75.3
2008-01-01	74.9
2008-04-01	75.4
2008-07-01	75.9
2008-10-01	76.8
2009-01-01	78.9
2009-04-01	80.8
2009-07-01	81.7
2009-10-01	81.7
2010-01-01	81.3
2010-04-01	81.4
2010-07-01	81.5
2010-10-01	81.5
2011-01-01	79.9
2011-04-01	80.1
2011-07-01	80.3
2011-10-01	81.0
2012-01-01	80.9
2012-04-01	81.5
2012-07-01	81.8
2012-10-01	82.4
2013-01-01	82.8
2013-04-01	83.4
2013-07-01	83.9
2013-10-01	84.0
2014-01-01	84.4
2014-04-01	84.8
2014-07-01	84.9
2014-10-01	85.7
2015-01-01	86.3
2015-04-01	87.0
2015-07-01	87.7
2015-10-01	88.9
2016-01-01	89.7
2016-04-01	90.1
2016-07-01	90.4
2016-10-01	90.5
2017-01-01	90.4
2017-04-01	90.5
2017-07-01	90.7
2017-10-01	90.7
2018-01-01	91.1