Quarter	Percentage of GDP
1999-01-01	142.8
1999-04-01	143.1
1999-07-01	140.2
1999-10-01	138.9
2000-01-01	141.6
2000-04-01	139.2
2000-07-01	138.4
2000-10-01	137.6
2001-01-01	150.7
2001-04-01	162.3
2001-07-01	173.9
2001-10-01	183.7
2002-01-01	183.2
2002-04-01	182.6
2002-07-01	184.2
2002-10-01	189.6
2003-01-01	201.9
2003-04-01	218.9
2003-07-01	231.3
2003-10-01	243.9
2004-01-01	238.2
2004-04-01	233.9
2004-07-01	228.6
2004-10-01	226.1
2005-01-01	223.9
2005-04-01	221.8
2005-07-01	219.5
2005-10-01	216.3
2006-01-01	217.3
2006-04-01	219.0
2006-07-01	221.5
2006-10-01	224.1
2007-01-01	259.6
2007-04-01	289.2
2007-07-01	316.9
2007-10-01	344.9
2008-01-01	340.2
2008-04-01	339.1
2008-07-01	338.7
2008-10-01	346.7
2009-01-01	361.5
2009-04-01	379.9
2009-07-01	397.1
2009-10-01	398.3
2010-01-01	393.9
2010-04-01	387.8
2010-07-01	378.3
2010-10-01	368.1
2011-01-01	362.5
2011-04-01	370.2
2011-07-01	369.6
2011-10-01	374.2
2012-01-01	388.8
2012-04-01	392.5
2012-07-01	399.1
2012-10-01	400.4
2013-01-01	404.9
2013-04-01	405.0
2013-07-01	409.6
2013-10-01	405.3
2014-01-01	408.5
2014-04-01	409.8
2014-07-01	414.9
2014-10-01	415.8
2015-01-01	428.2
2015-04-01	430.2
2015-07-01	440.4
2015-10-01	448.2
2016-01-01	449.7
2016-04-01	443.6
2016-07-01	442.6
2016-10-01	444.2
2017-01-01	451.1
2017-04-01	447.2
2017-07-01	443.6
2017-10-01	435.9
2018-01-01	417.7