Quarter	Percentage of GDP
1999-01-01	207.1
1999-04-01	206.5
1999-07-01	206.2
1999-10-01	206.9
2000-01-01	208.4
2000-04-01	207.0
2000-07-01	206.5
2000-10-01	207.2
2001-01-01	208.9
2001-04-01	208.3
2001-07-01	209.5
2001-10-01	210.6
2002-01-01	211.4
2002-04-01	213.0
2002-07-01	214.5
2002-10-01	215.4
2003-01-01	217.1
2003-04-01	219.3
2003-07-01	218.3
2003-10-01	218.2
2004-01-01	224.2
2004-04-01	223.3
2004-07-01	223.3
2004-10-01	224.2
2005-01-01	227.1
2005-04-01	228.7
2005-07-01	227.7
2005-10-01	227.7
2006-01-01	229.6
2006-04-01	228.9
2006-07-01	229.5
2006-10-01	229.5
2007-01-01	231.0
2007-04-01	230.8
2007-07-01	232.1
2007-10-01	234.2
2008-01-01	236.7
2008-04-01	235.8
2008-07-01	238.7
2008-10-01	245.0
2009-01-01	249.6
2009-04-01	253.3
2009-07-01	257.9
2009-10-01	259.5
2010-01-01	261.9
2010-04-01	262.9
2010-07-01	262.9
2010-10-01	261.3
2011-01-01	261.5
2011-04-01	261.8
2011-07-01	264.6
2011-10-01	265.9
2012-01-01	268.3
2012-04-01	269.5
2012-07-01	270.3
2012-10-01	270.9
2013-01-01	272.5
2013-04-01	270.2
2013-07-01	269.0
2013-10-01	268.3
2014-01-01	269.9
2014-04-01	270.0
2014-07-01	269.9
2014-10-01	272.0
2015-01-01	274.3
2015-04-01	270.3
2015-07-01	270.4
2015-10-01	270.8
2016-01-01	274.5
2016-04-01	276.8
2016-07-01	276.9
2016-10-01	273.9
2017-01-01	273.8
2017-04-01	272.6
2017-07-01	271.7
2017-10-01	270.9
2018-01-01	271.2