Quarter	Percentage of GDP
2001-10-01	58.4
2002-01-01	58.5
2002-04-01	59.5
2002-07-01	60.1
2002-10-01	60.0
2003-01-01	59.7
2003-04-01	60.2
2003-07-01	60.4
2003-10-01	60.2
2004-01-01	62.1
2004-04-01	62.2
2004-07-01	61.6
2004-10-01	61.2
2005-01-01	61.3
2005-04-01	60.5
2005-07-01	59.5
2005-10-01	59.3
2006-01-01	58.9
2006-04-01	58.0
2006-07-01	57.3
2006-10-01	56.6
2007-01-01	56.3
2007-04-01	55.9
2007-07-01	55.4
2007-10-01	55.0
2008-01-01	54.3
2008-04-01	54.0
2008-07-01	54.5
2008-10-01	57.0
2009-01-01	59.2
2009-04-01	61.7
2009-07-01	63.8
2009-10-01	65.0
2010-01-01	65.4
2010-04-01	66.1
2010-07-01	66.4
2010-10-01	67.2
2011-01-01	67.0
2011-04-01	67.1
2011-07-01	67.6
2011-10-01	68.3
2012-01-01	68.4
2012-04-01	68.9
2012-07-01	69.1
2012-10-01	69.7
2013-01-01	70.0
2013-04-01	70.2
2013-07-01	70.2
2013-10-01	70.9
2014-01-01	70.9
2014-04-01	70.9
2014-07-01	70.8
2014-10-01	71.5
2015-01-01	71.2
2015-04-01	71.1
2015-07-01	71.2
2015-10-01	72.2
2016-01-01	72.5
2016-04-01	72.7
2016-07-01	72.9
2016-10-01	73.1
2017-01-01	72.7
2017-04-01	72.7
2017-07-01	72.9
2017-10-01	72.8
2018-01-01	73.1