Quarter	Percentage of GDP
1998-10-01	163.0
1999-01-01	164.7
1999-04-01	166.0
1999-07-01	163.3
1999-10-01	160.6
2000-01-01	162.7
2000-04-01	161.9
2000-07-01	168.5
2000-10-01	168.1
2001-01-01	167.1
2001-04-01	166.3
2001-07-01	164.2
2001-10-01	161.4
2002-01-01	166.5
2002-04-01	165.3
2002-07-01	165.5
2002-10-01	163.3
2003-01-01	164.9
2003-04-01	169.9
2003-07-01	168.7
2003-10-01	170.2
2004-01-01	169.5
2004-04-01	172.1
2004-07-01	172.9
2004-10-01	174.1
2005-01-01	170.2
2005-04-01	174.4
2005-07-01	172.8
2005-10-01	176.4
2006-01-01	175.6
2006-04-01	180.8
2006-07-01	179.0
2006-10-01	179.1
2007-01-01	177.9
2007-04-01	179.8
2007-07-01	176.9
2007-10-01	179.7
2008-01-01	178.3
2008-04-01	182.0
2008-07-01	181.8
2008-10-01	190.6
2009-01-01	200.6
2009-04-01	203.3
2009-07-01	204.8
2009-10-01	209.3
2010-01-01	215.9
2010-04-01	222.7
2010-07-01	222.0
2010-10-01	219.4
2011-01-01	216.0
2011-04-01	216.1
2011-07-01	218.7
2011-10-01	221.3
2012-01-01	223.0
2012-04-01	227.8
2012-07-01	227.7
2012-10-01	231.3
2013-01-01	237.3
2013-04-01	238.1
2013-07-01	234.5
2013-10-01	236.2
2014-01-01	237.9
2014-04-01	240.5
2014-07-01	241.0
2014-10-01	250.0
2015-01-01	257.6
2015-04-01	260.4
2015-07-01	261.6
2015-10-01	262.1
2016-01-01	261.1
2016-04-01	256.7
2016-07-01	253.5
2016-10-01	251.4
2017-01-01	253.1
2017-04-01	248.6
2017-07-01	246.3
2017-10-01	245.2
2018-01-01	243.6