Quarter	Percentage of GDP
1998-10-01	270.6
1999-01-01	274.3
1999-04-01	274.5
1999-07-01	273.2
1999-10-01	273.7
2000-01-01	274.3
2000-04-01	273.0
2000-07-01	272.6
2000-10-01	272.9
2001-01-01	268.1
2001-04-01	269.5
2001-07-01	267.0
2001-10-01	267.7
2002-01-01	266.8
2002-04-01	266.2
2002-07-01	268.2
2002-10-01	268.1
2003-01-01	269.5
2003-04-01	272.0
2003-07-01	274.4
2003-10-01	283.5
2004-01-01	283.8
2004-04-01	283.0
2004-07-01	283.2
2004-10-01	284.4
2005-01-01	283.9
2005-04-01	292.6
2005-07-01	291.3
2005-10-01	288.7
2006-01-01	285.6
2006-04-01	283.2
2006-07-01	283.1
2006-10-01	278.4
2007-01-01	279.6
2007-04-01	278.3
2007-07-01	277.7
2007-10-01	274.9
2008-01-01	278.6
2008-04-01	280.8
2008-07-01	280.4
2008-10-01	291.2
2009-01-01	297.5
2009-04-01	301.2
2009-07-01	305.3
2009-10-01	310.0
2010-01-01	316.9
2010-04-01	325.0
2010-07-01	325.7
2010-10-01	326.9
2011-01-01	326.5
2011-04-01	332.5
2011-07-01	336.7
2011-10-01	342.5
2012-01-01	344.2
2012-04-01	350.0
2012-07-01	352.0
2012-10-01	352.8
2013-01-01	352.2
2013-04-01	353.7
2013-07-01	351.6
2013-10-01	350.1
2014-01-01	349.3
2014-04-01	353.2
2014-07-01	353.7
2014-10-01	365.1
2015-01-01	372.5
2015-04-01	366.6
2015-07-01	362.9
2015-10-01	359.4
2016-01-01	360.7
2016-04-01	360.8
2016-07-01	364.9
2016-10-01	359.6
2017-01-01	355.3
2017-04-01	352.1
2017-07-01	347.9
2017-10-01	343.4
2018-01-01	341.6