Quarter	Percentage of GDP
1997-07-01	64.8
1997-10-01	63.7
1998-01-01	63.6
1998-04-01	64.4
1998-07-01	67.2
1998-10-01	71.2
1999-01-01	67.5
1999-04-01	66.9
1999-07-01	70.1
1999-10-01	70.7
2000-01-01	69.5
2000-04-01	68.9
2000-07-01	67.3
2000-10-01	68.5
2001-01-01	65.9
2001-04-01	66.1
2001-07-01	68.8
2001-10-01	67.4
2002-01-01	67.5
2002-04-01	72.2
2002-07-01	71.3
2002-10-01	73.4
2003-01-01	72.9
2003-04-01	73.7
2003-07-01	74.7
2003-10-01	76.2
2004-01-01	74.3
2004-04-01	72.5
2004-07-01	72.1
2004-10-01	76.1
2005-01-01	73.6
2005-04-01	71.2
2005-07-01	71.6
2005-10-01	71.4
2006-01-01	73.3
2006-04-01	75.9
2006-07-01	76.0
2006-10-01	77.3
2007-01-01	77.7
2007-04-01	78.4
2007-07-01	81.0
2007-10-01	81.8
2008-01-01	84.2
2008-04-01	82.5
2008-07-01	77.1
2008-10-01	76.9
2009-01-01	77.4
2009-04-01	84.5
2009-07-01	88.2
2009-10-01	86.2
2010-01-01	83.9
2010-04-01	80.8
2010-07-01	84.9
2010-10-01	84.4
2011-01-01	85.2
2011-04-01	84.5
2011-07-01	80.5
2011-10-01	80.1
2012-01-01	80.9
2012-04-01	80.1
2012-07-01	82.8
2012-10-01	82.8
2013-01-01	81.6
2013-04-01	81.3
2013-07-01	83.1
2013-10-01	83.3
2014-01-01	83.4
2014-04-01	84.2
2014-07-01	81.1
2014-10-01	79.9
2015-01-01	79.0
2015-04-01	82.4
2015-07-01	83.1
2015-10-01	84.6
2016-01-01	88.2
2016-04-01	88.3
2016-07-01	88.8
2016-10-01	85.3
2017-01-01	87.1
2017-04-01	89.1
2017-07-01	90.3
2017-10-01	90.7
2018-01-01	91.6