Quarter	Percentage of GDP
1999-10-01	61.9
2000-01-01	62.3
2000-04-01	62.2
2000-07-01	62.5
2000-10-01	62.7
2001-01-01	62.6
2001-04-01	63.1
2001-07-01	64.0
2001-10-01	64.4
2002-01-01	64.9
2002-04-01	65.6
2002-07-01	66.3
2002-10-01	67.1
2003-01-01	67.8
2003-04-01	69.1
2003-07-01	69.9
2003-10-01	70.6
2004-01-01	71.3
2004-04-01	72.0
2004-07-01	72.6
2004-10-01	73.4
2005-01-01	73.7
2005-04-01	74.5
2005-07-01	75.1
2005-10-01	75.6
2006-01-01	76.5
2006-04-01	77.1
2006-07-01	77.8
2006-10-01	78.1
2007-01-01	78.4
2007-04-01	79.1
2007-07-01	79.4
2007-10-01	79.8
2008-01-01	79.7
2008-04-01	79.5
2008-07-01	79.9
2008-10-01	79.4
2009-01-01	80.1
2009-04-01	81.1
2009-07-01	82.0
2009-10-01	82.4
2010-01-01	81.8
2010-04-01	81.2
2010-07-01	80.4
2010-10-01	79.9
2011-01-01	79.3
2011-04-01	78.7
2011-07-01	78.0
2011-10-01	77.6
2012-01-01	77.1
2012-04-01	76.7
2012-07-01	76.3
2012-10-01	76.1
2013-01-01	75.9
2013-04-01	75.6
2013-07-01	75.4
2013-10-01	75.0
2014-01-01	74.6
2014-04-01	74.4
2014-07-01	74.1
2014-10-01	73.9
2015-01-01	73.4
2015-04-01	73.3
2015-07-01	73.2
2015-10-01	72.9
2016-01-01	72.8
2016-04-01	73.1
2016-07-01	73.3
2016-10-01	73.4
2017-01-01	73.2
2017-04-01	73.3
2017-07-01	73.1
2017-10-01	73.0
2018-01-01	72.8