Quarter	Percentage of GDP
2001-10-01	72.1
2002-01-01	69.3
2002-04-01	67.3
2002-07-01	65.0
2002-10-01	62.7
2003-01-01	60.8
2003-04-01	59.4
2003-07-01	58.2
2003-10-01	57.1
2004-01-01	56.7
2004-04-01	55.7
2004-07-01	54.4
2004-10-01	52.8
2005-01-01	50.8
2005-04-01	48.8
2005-07-01	46.8
2005-10-01	44.2
2006-01-01	41.8
2006-04-01	39.7
2006-07-01	37.8
2006-10-01	36.4
2007-01-01	35.5
2007-04-01	34.6
2007-07-01	33.7
2007-10-01	32.8
2008-01-01	32.7
2008-04-01	32.1
2008-07-01	31.4
2008-10-01	30.9
2009-01-01	29.4
2009-04-01	28.3
2009-07-01	27.6
2009-10-01	26.8
2010-01-01	25.7
2010-04-01	25.1
2010-07-01	24.9
2010-10-01	24.5
2011-01-01	23.9
2011-04-01	23.5
2011-07-01	23.8
2011-10-01	23.1
2012-01-01	23.0
2012-04-01	23.3
2012-07-01	23.3
2012-10-01	22.9
2013-01-01	22.7
2013-04-01	22.7
2013-07-01	24.2
2013-10-01	24.8
2014-01-01	24.6
2014-04-01	24.7
2014-07-01	25.1
2014-10-01	24.6
2015-01-01	25.9
2015-04-01	26.0
2015-07-01	27.3
2015-10-01	27.5
2016-01-01	27.4
2016-04-01	28.1
2016-07-01	28.5
2016-10-01	28.4
2017-01-01	28.7
2017-04-01	28.5
2017-07-01	29.0
2017-10-01	29.2
2018-01-01	29.4