Quarter	Percentage of GDP
2006-01-01	54.3
2006-04-01	53.9
2006-07-01	54.0
2006-10-01	54.1
2007-01-01	53.8
2007-04-01	53.6
2007-07-01	53.5
2007-10-01	52.3
2008-01-01	50.7
2008-04-01	49.5
2008-07-01	48.6
2008-10-01	49.5
2009-01-01	51.4
2009-04-01	54.4
2009-07-01	57.7
2009-10-01	58.8
2010-01-01	58.6
2010-04-01	58.6
2010-07-01	59.0
2010-10-01	59.6
2011-01-01	59.8
2011-04-01	59.9
2011-07-01	59.9
2011-10-01	60.6
2012-01-01	61.2
2012-04-01	61.9
2012-07-01	62.7
2012-10-01	63.7
2013-01-01	64.9
2013-04-01	66.3
2013-07-01	67.4
2013-10-01	68.1
2014-01-01	68.0
2014-04-01	67.9
2014-07-01	68.2
2014-10-01	68.9
2015-01-01	69.6
2015-04-01	70.0
2015-07-01	70.3
2015-10-01	70.9
2016-01-01	70.7
2016-04-01	70.6
2016-07-01	70.4
2016-10-01	70.2
2017-01-01	68.9
2017-04-01	68.0
2017-07-01	67.2
2017-10-01	67.1
2018-01-01	67.1