Quarter	Percentage of GDP
2001-10-01	59.0
2002-01-01	58.7
2002-04-01	60.0
2002-07-01	61.5
2002-10-01	61.4
2003-01-01	61.2
2003-04-01	61.8
2003-07-01	61.4
2003-10-01	61.0
2004-01-01	63.1
2004-04-01	62.4
2004-07-01	62.2
2004-10-01	61.8
2005-01-01	61.7
2005-04-01	61.5
2005-07-01	60.2
2005-10-01	59.7
2006-01-01	58.7
2006-04-01	57.5
2006-07-01	57.3
2006-10-01	56.4
2007-01-01	56.0
2007-04-01	55.0
2007-07-01	55.0
2007-10-01	54.9
2008-01-01	54.5
2008-04-01	53.5
2008-07-01	54.2
2008-10-01	57.7
2009-01-01	59.6
2009-04-01	61.5
2009-07-01	64.0
2009-10-01	64.9
2010-01-01	65.3
2010-04-01	66.6
2010-07-01	67.3
2010-10-01	67.1
2011-01-01	66.5
2011-04-01	66.9
2011-07-01	68.5
2011-10-01	69.1
2012-01-01	69.3
2012-04-01	70.4
2012-07-01	70.8
2012-10-01	71.6
2013-01-01	71.9
2013-04-01	71.2
2013-07-01	70.9
2013-10-01	71.3
2014-01-01	71.8
2014-04-01	72.3
2014-07-01	72.4
2014-10-01	73.8
2015-01-01	74.1
2015-04-01	72.8
2015-07-01	73.4
2015-10-01	74.0
2016-01-01	75.3
2016-04-01	76.3
2016-07-01	76.3
2016-10-01	75.1
2017-01-01	74.6
2017-04-01	74.5
2017-07-01	74.5
2017-10-01	74.4
2018-01-01	74.5