Quarter	Percentage of GDP
1999-01-01	126.2
1999-04-01	125.4
1999-07-01	130.9
1999-10-01	132.0
2000-01-01	130.3
2000-04-01	129.1
2000-07-01	126.5
2000-10-01	128.7
2001-01-01	124.6
2001-04-01	125.9
2001-07-01	131.2
2001-10-01	129.6
2002-01-01	130.8
2002-04-01	139.7
2002-07-01	137.6
2002-10-01	140.8
2003-01-01	139.4
2003-04-01	140.4
2003-07-01	141.6
2003-10-01	143.8
2004-01-01	140.3
2004-04-01	136.9
2004-07-01	136.3
2004-10-01	142.7
2005-01-01	138.3
2005-04-01	133.9
2005-07-01	133.8
2005-10-01	133.7
2006-01-01	136.9
2006-04-01	141.1
2006-07-01	140.5
2006-10-01	142.5
2007-01-01	142.5
2007-04-01	143.7
2007-07-01	147.0
2007-10-01	148.0
2008-01-01	150.9
2008-04-01	147.2
2008-07-01	138.7
2008-10-01	138.1
2009-01-01	139.4
2009-04-01	151.0
2009-07-01	158.2
2009-10-01	154.7
2010-01-01	148.1
2010-04-01	142.6
2010-07-01	149.1
2010-10-01	148.0
2011-01-01	148.9
2011-04-01	147.4
2011-07-01	140.3
2011-10-01	139.0
2012-01-01	141.0
2012-04-01	139.6
2012-07-01	144.5
2012-10-01	144.6
2013-01-01	142.7
2013-04-01	142.7
2013-07-01	145.7
2013-10-01	145.9
2014-01-01	146.5
2014-04-01	147.6
2014-07-01	142.4
2014-10-01	140.7
2015-01-01	140.0
2015-04-01	145.6
2015-07-01	147.4
2015-10-01	149.4
2016-01-01	155.5
2016-04-01	155.7
2016-07-01	156.7
2016-10-01	151.0
2017-01-01	153.7
2017-04-01	157.0
2017-07-01	158.7
2017-10-01	158.7
2018-01-01	159.9