Quarter	Percentage of GDP
1998-10-01	177.0
1999-01-01	178.4
1999-04-01	183.4
1999-07-01	186.0
1999-10-01	187.8
2000-01-01	193.8
2000-04-01	194.2
2000-07-01	195.2
2000-10-01	197.5
2001-01-01	201.3
2001-04-01	203.8
2001-07-01	208.3
2001-10-01	212.0
2002-01-01	215.2
2002-04-01	215.2
2002-07-01	220.5
2002-10-01	226.4
2003-01-01	236.8
2003-04-01	236.3
2003-07-01	237.4
2003-10-01	238.6
2004-01-01	253.7
2004-04-01	253.7
2004-07-01	252.3
2004-10-01	253.8
2005-01-01	251.0
2005-04-01	254.7
2005-07-01	255.4
2005-10-01	261.5
2006-01-01	253.6
2006-04-01	256.0
2006-07-01	255.9
2006-10-01	261.6
2007-01-01	261.7
2007-04-01	262.6
2007-07-01	264.2
2007-10-01	269.4
2008-01-01	271.9
2008-04-01	276.2
2008-07-01	279.4
2008-10-01	285.9
2009-01-01	295.4
2009-04-01	303.8
2009-07-01	305.6
2009-10-01	307.3
2010-01-01	305.7
2010-04-01	306.6
2010-07-01	307.0
2010-10-01	311.5
2011-01-01	309.8
2011-04-01	317.3
2011-07-01	321.1
2011-10-01	316.4
2012-01-01	330.8
2012-04-01	340.9
2012-07-01	350.7
2012-10-01	357.6
2013-01-01	362.1
2013-04-01	362.1
2013-07-01	353.6
2013-10-01	351.6
2014-01-01	356.0
2014-04-01	349.9
2014-07-01	352.8
2014-10-01	349.6
2015-01-01	351.5
2015-04-01	341.6
2015-07-01	341.6
2015-10-01	336.4
2016-01-01	331.4
2016-04-01	330.3
2016-07-01	328.9
2016-10-01	321.8
2017-01-01	320.2
2017-04-01	321.0
2017-07-01	319.7
2017-10-01	314.3
2018-01-01	313.6