Quarter	Percentage of GDP
1998-10-01	190.1
1999-01-01	190.5
1999-04-01	191.0
1999-07-01	191.6
1999-10-01	191.9
2000-01-01	191.0
2000-04-01	192.0
2000-07-01	193.2
2000-10-01	194.4
2001-01-01	195.3
2001-04-01	197.4
2001-07-01	198.9
2001-10-01	198.7
2002-01-01	199.0
2002-04-01	200.4
2002-07-01	201.1
2002-10-01	202.1
2003-01-01	205.2
2003-04-01	207.9
2003-07-01	207.7
2003-10-01	205.4
2004-01-01	207.3
2004-04-01	208.8
2004-07-01	209.8
2004-10-01	210.7
2005-01-01	211.5
2005-04-01	214.9
2005-07-01	215.4
2005-10-01	216.2
2006-01-01	215.6
2006-04-01	215.0
2006-07-01	216.2
2006-10-01	214.7
2007-01-01	216.3
2007-04-01	217.8
2007-07-01	218.3
2007-10-01	216.7
2008-01-01	219.4
2008-04-01	221.0
2008-07-01	225.0
2008-10-01	229.7
2009-01-01	235.4
2009-04-01	241.1
2009-07-01	246.0
2009-10-01	248.7
2010-01-01	252.1
2010-04-01	254.9
2010-07-01	253.8
2010-10-01	252.8
2011-01-01	253.8
2011-04-01	257.8
2011-07-01	262.0
2011-10-01	262.5
2012-01-01	268.7
2012-04-01	272.7
2012-07-01	274.0
2012-10-01	275.4
2013-01-01	276.7
2013-04-01	275.0
2013-07-01	274.6
2013-10-01	274.0
2014-01-01	279.4
2014-04-01	283.6
2014-07-01	286.9
2014-10-01	288.4
2015-01-01	295.8
2015-04-01	291.0
2015-07-01	291.6
2015-10-01	291.5
2016-01-01	296.1
2016-04-01	301.3
2016-07-01	302.4
2016-10-01	300.0
2017-01-01	302.8
2017-04-01	303.2
2017-07-01	302.8
2017-10-01	301.1
2018-01-01	302.8