Quarter	Percentage of GDP
1999-01-01	138.4
1999-04-01	136.9
1999-07-01	143.7
1999-10-01	144.6
2000-01-01	143.1
2000-04-01	142.2
2000-07-01	139.5
2000-10-01	142.9
2001-01-01	138.5
2001-04-01	139.9
2001-07-01	146.4
2001-10-01	143.9
2002-01-01	144.9
2002-04-01	155.2
2002-07-01	152.6
2002-10-01	155.8
2003-01-01	153.7
2003-04-01	154.3
2003-07-01	155.7
2003-10-01	159.0
2004-01-01	154.7
2004-04-01	151.3
2004-07-01	150.8
2004-10-01	158.7
2005-01-01	154.0
2005-04-01	149.3
2005-07-01	149.7
2005-10-01	150.2
2006-01-01	154.6
2006-04-01	160.5
2006-07-01	160.0
2006-10-01	162.5
2007-01-01	162.6
2007-04-01	164.2
2007-07-01	169.0
2007-10-01	171.2
2008-01-01	175.8
2008-04-01	171.8
2008-07-01	162.8
2008-10-01	162.9
2009-01-01	162.3
2009-04-01	174.2
2009-07-01	181.2
2009-10-01	176.9
2010-01-01	169.2
2010-04-01	163.3
2010-07-01	172.2
2010-10-01	171.2
2011-01-01	173.1
2011-04-01	171.6
2011-07-01	164.0
2011-10-01	161.9
2012-01-01	163.5
2012-04-01	161.4
2012-07-01	166.7
2012-10-01	165.7
2013-01-01	161.5
2013-04-01	161.4
2013-07-01	165.0
2013-10-01	164.5
2014-01-01	164.4
2014-04-01	163.8
2014-07-01	156.2
2014-10-01	153.9
2015-01-01	151.1
2015-04-01	157.3
2015-07-01	159.6
2015-10-01	160.2
2016-01-01	165.3
2016-04-01	165.0
2016-07-01	165.5
2016-10-01	158.9
2017-01-01	161.7
2017-04-01	166.4
2017-07-01	168.2
2017-10-01	167.5
2018-01-01	167.2